Solve 1280*1280

$$1280 \times 1280$$

Evaluate

$$1638400$$

Steps For Long Multiplication

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

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

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

$$\begin{array}{c}\phantom{\times999}1280\\\underline{\times\phantom{999}1280}\\\phantom{\times9999999}0\\\end{array}$$

Now multiply the first number with the 2^{nd} digit in 2^{nd} number to get intermediate results. That is Multiply 1280 with 8. Write the result 10240 at the end leaving 1 spaces to the right like this.

$$\begin{array}{c}\phantom{\times999}1280\\\underline{\times\phantom{999}1280}\\\phantom{\times9999999}0\\\phantom{\times9}10240\phantom{9}\\\end{array}$$

Now multiply the first number with the 3^{rd} digit in 2^{nd} number to get intermediate results. That is Multiply 1280 with 2. Write the result 2560 at the end leaving 2 spaces to the right like this.

$$\begin{array}{c}\phantom{\times999}1280\\\underline{\times\phantom{999}1280}\\\phantom{\times9999999}0\\\phantom{\times9}10240\phantom{9}\\\phantom{\times9}2560\phantom{99}\\\end{array}$$

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.

$$\begin{array}{c}\phantom{\times999}1280\\\underline{\times\phantom{999}1280}\\\phantom{\times9999999}0\\\phantom{\times9}10240\phantom{9}\\\phantom{\times9}2560\phantom{99}\\\underline{\phantom{\times}1280\phantom{999}}\\\end{array}$$

Now add the intermediate results to get final answer.

$$\begin{array}{c}\phantom{\times999}1280\\\underline{\times\phantom{999}1280}\\\phantom{\times9999999}0\\\phantom{\times9}10240\phantom{9}\\\phantom{\times9}2560\phantom{99}\\\underline{\phantom{\times}1280\phantom{999}}\\\phantom{\times}1638400\end{array}$$

Factor

$$2^{16}\times 5^{2}$$