Solve 1280*1024

$$1280 \times 1024$$

Evaluate

$$1310720$$

Steps For Long Multiplication

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

$$\begin{array}{c}\phantom{\times999}1280\\\underline{\times\phantom{999}1024}\\\end{array}$$

Now multiply the first number with the 1^{st} digit in 2^{nd} number to get intermediate results. That is Multiply 1280 with 4. Write the result 5120 at the end leaving 0 spaces to the right like this.

$$\begin{array}{c}\phantom{\times999}1280\\\underline{\times\phantom{999}1024}\\\phantom{\times999}5120\\\end{array}$$

Now multiply the first number with the 2^{nd} digit in 2^{nd} number to get intermediate results. That is Multiply 1280 with 2. Write the result 2560 at the end leaving 1 spaces to the right like this.

$$\begin{array}{c}\phantom{\times999}1280\\\underline{\times\phantom{999}1024}\\\phantom{\times999}5120\\\phantom{\times99}2560\phantom{9}\\\end{array}$$

Now multiply the first number with the 3^{rd} digit in 2^{nd} number to get intermediate results. That is Multiply 1280 with 0. Write the result 0 at the end leaving 2 spaces to the right like this.

$$\begin{array}{c}\phantom{\times999}1280\\\underline{\times\phantom{999}1024}\\\phantom{\times999}5120\\\phantom{\times99}2560\phantom{9}\\\phantom{\times99999}0\phantom{99}\\\end{array}$$

Now multiply the first number with the 4^{th} digit in 2^{nd} number to get intermediate results. That is Multiply 1280 with 1. Write the result 1280 at the end leaving 3 spaces to the right like this.

$$\begin{array}{c}\phantom{\times999}1280\\\underline{\times\phantom{999}1024}\\\phantom{\times999}5120\\\phantom{\times99}2560\phantom{9}\\\phantom{\times99999}0\phantom{99}\\\underline{\phantom{\times}1280\phantom{999}}\\\end{array}$$

Now add the intermediate results to get final answer.

$$\begin{array}{c}\phantom{\times999}1280\\\underline{\times\phantom{999}1024}\\\phantom{\times999}5120\\\phantom{\times99}2560\phantom{9}\\\phantom{\times99999}0\phantom{99}\\\underline{\phantom{\times}1280\phantom{999}}\\\phantom{\times}1310720\end{array}$$

Factor

$$2^{18}\times 5$$