Evaluate 30*30

Multiply ${\displaystyle 0}$ by ${\displaystyle 0}$. Place the result in the next column in the result line. There is one result line for each digit in ${\displaystyle 30}$.

Multiply ${\displaystyle 0}$ by ${\displaystyle 3}$. Place the result in the next column in the result line. There is one result line for each digit in ${\displaystyle 30}$.

Multiply ${\displaystyle 3}$ by ${\displaystyle 0}$. Place the result in the next column in the result line. There is one result line for each digit in ${\displaystyle 30}$.

Multiply ${\displaystyle 3}$ by ${\displaystyle 3}$. Place the result in the next column in the result line. There is one result line for each digit in ${\displaystyle 30}$.

Add the numbers in each column. In this case, add ${\displaystyle 0+0}$, then place the ${\displaystyle 0}$ in the result line.

Add the numbers in each column. In this case, add ${\displaystyle 0+0}$, then place the ${\displaystyle 0}$ in the result line.

Add the numbers in each column. In this case, add ${\displaystyle 0+9}$, then place the ${\displaystyle 9}$ in the result line.