Evaluate 80*5

Multiply ${\displaystyle 5}$ by ${\displaystyle 0}$. Place the result in the next column in the result line. There is one result line for each digit in ${\displaystyle 5}$.

Multiply ${\displaystyle 5}$ by ${\displaystyle 8}$. Place the ones digit ${\displaystyle \left(0\right)}$ in the result line and carry the tens digit ${\displaystyle \left(4\right)}$. There is one result line for each digit in ${\displaystyle 5}$.

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

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

Add the numbers in each column. In this case, add ${\displaystyle 4}$, then place the ${\displaystyle 4}$ in the result line.