Evaluate 7*15

Multiply ${\displaystyle 5}$ by ${\displaystyle 7}$. Place the ones digit ${\displaystyle \left(5\right)}$ in the result line and carry the tens digit ${\displaystyle \left(3\right)}$. There is one result line for each digit in ${\displaystyle 15}$.

Multiply ${\displaystyle 1}$ by ${\displaystyle 7}$. Place the result in the next column in the result line. There is one result line for each digit in ${\displaystyle 15}$.

Add the numbers in each column. In this case, add ${\displaystyle 5+0}$, then place the ${\displaystyle 5}$ in the result line.

Add the numbers in each column. In this case, add ${\displaystyle 3+7}$, then place the ${\displaystyle 0}$ in the result line and carry the ${\displaystyle 1}$.