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\begin{array}{c}\phantom{\times9999999}201\\\underline{\times\phantom{999}5771145}\\\end{array}
First line up the numbers vertically and match the places from the right like this.
\begin{array}{c}\phantom{\times9999999}201\\\underline{\times\phantom{999}5771145}\\\phantom{\times999999}1005\\\end{array}
Now multiply the first number with the 1^{st} digit in 2^{nd} number to get intermediate results. That is Multiply 201 with 5. Write the result 1005 at the end leaving 0 spaces to the right like this.
\begin{array}{c}\phantom{\times9999999}201\\\underline{\times\phantom{999}5771145}\\\phantom{\times999999}1005\\\phantom{\times999999}804\phantom{9}\\\end{array}
Now multiply the first number with the 2^{nd} digit in 2^{nd} number to get intermediate results. That is Multiply 201 with 4. Write the result 804 at the end leaving 1 spaces to the right like this.
\begin{array}{c}\phantom{\times9999999}201\\\underline{\times\phantom{999}5771145}\\\phantom{\times999999}1005\\\phantom{\times999999}804\phantom{9}\\\phantom{\times99999}201\phantom{99}\\\end{array}
Now multiply the first number with the 3^{rd} digit in 2^{nd} number to get intermediate results. That is Multiply 201 with 1. Write the result 201 at the end leaving 2 spaces to the right like this.
\begin{array}{c}\phantom{\times9999999}201\\\underline{\times\phantom{999}5771145}\\\phantom{\times999999}1005\\\phantom{\times999999}804\phantom{9}\\\phantom{\times99999}201\phantom{99}\\\phantom{\times9999}201\phantom{999}\\\end{array}
Now multiply the first number with the 4^{th} digit in 2^{nd} number to get intermediate results. That is Multiply 201 with 1. Write the result 201 at the end leaving 3 spaces to the right like this.
\begin{array}{c}\phantom{\times9999999}201\\\underline{\times\phantom{999}5771145}\\\phantom{\times999999}1005\\\phantom{\times999999}804\phantom{9}\\\phantom{\times99999}201\phantom{99}\\\phantom{\times9999}201\phantom{999}\\\phantom{\times99}1407\phantom{9999}\\\end{array}
Now multiply the first number with the 5^{th} digit in 2^{nd} number to get intermediate results. That is Multiply 201 with 7. Write the result 1407 at the end leaving 4 spaces to the right like this.
\begin{array}{c}\phantom{\times9999999}201\\\underline{\times\phantom{999}5771145}\\\phantom{\times999999}1005\\\phantom{\times999999}804\phantom{9}\\\phantom{\times99999}201\phantom{99}\\\phantom{\times9999}201\phantom{999}\\\phantom{\times99}1407\phantom{9999}\\\phantom{\times9}1407\phantom{99999}\\\end{array}
Now multiply the first number with the 6^{th} digit in 2^{nd} number to get intermediate results. That is Multiply 201 with 7. Write the result 1407 at the end leaving 5 spaces to the right like this.
\begin{array}{c}\phantom{\times9999999}201\\\underline{\times\phantom{999}5771145}\\\phantom{\times999999}1005\\\phantom{\times999999}804\phantom{9}\\\phantom{\times99999}201\phantom{99}\\\phantom{\times9999}201\phantom{999}\\\phantom{\times99}1407\phantom{9999}\\\phantom{\times9}1407\phantom{99999}\\\underline{\phantom{\times}1005\phantom{999999}}\\\end{array}
Now multiply the first number with the 7^{th} digit in 2^{nd} number to get intermediate results. That is Multiply 201 with 5. Write the result 1005 at the end leaving 6 spaces to the right like this.
\begin{array}{c}\phantom{\times9999999}201\\\underline{\times\phantom{999}5771145}\\\phantom{\times999999}1005\\\phantom{\times999999}804\phantom{9}\\\phantom{\times99999}201\phantom{99}\\\phantom{\times9999}201\phantom{999}\\\phantom{\times99}1407\phantom{9999}\\\phantom{\times9}1407\phantom{99999}\\\underline{\phantom{\times}1005\phantom{999999}}\\\phantom{\times}1160000145\end{array}
Now add the intermediate results to get final answer.