Solve 21*210

$$21 \times 210$$

Evaluate

$$4410$$

Steps For Long Multiplication

First line up the numbers vertically and match the places from the right like this.

$$\begin{array}{c}\phantom{\times99}21\\\underline{\times\phantom{9}210}\\\end{array}$$

Now multiply the first number with the 1^{st} digit in 2^{nd} number to get intermediate results. That is Multiply 21 with 0. Write the result 0 at the end leaving 0 spaces to the right like this.

$$\begin{array}{c}\phantom{\times99}21\\\underline{\times\phantom{9}210}\\\phantom{\times9999}0\\\end{array}$$

Now multiply the first number with the 2^{nd} digit in 2^{nd} number to get intermediate results. That is Multiply 21 with 1. Write the result 21 at the end leaving 1 spaces to the right like this.

$$\begin{array}{c}\phantom{\times99}21\\\underline{\times\phantom{9}210}\\\phantom{\times9999}0\\\phantom{\times9}21\phantom{9}\\\end{array}$$

Now multiply the first number with the 3^{rd} digit in 2^{nd} number to get intermediate results. That is Multiply 21 with 2. Write the result 42 at the end leaving 2 spaces to the right like this.

$$\begin{array}{c}\phantom{\times99}21\\\underline{\times\phantom{9}210}\\\phantom{\times9999}0\\\phantom{\times9}21\phantom{9}\\\underline{\phantom{\times}42\phantom{99}}\\\end{array}$$

Now add the intermediate results to get final answer.

$$\begin{array}{c}\phantom{\times99}21\\\underline{\times\phantom{9}210}\\\phantom{\times9999}0\\\phantom{\times9}21\phantom{9}\\\underline{\phantom{\times}42\phantom{99}}\\\phantom{\times}4410\end{array}$$

Factor

$$2\times 3^{2}\times 5\times 7^{2}$$