Solution - Long multiplication

Start by multiplying the ones digit (5) of the multiplier 5 by each digit of the multiplicand 225, from right to left.

Multiply the ones digit (5) of the multiplicator by the number in the ones place value:
5×5=25

Write 5 in the ones place.

Because the result is greater than 9, carry the 2 to the tens place.

Multiply the ones digit (5) of the multiplicator by the number in the tens place value and add the carried number (2):
5×2+2=12

Write 2 in the tens place.

Because the result is greater than 9, carry the 1 to the hundreds place.

Multiply the ones digit (5) of the multiplicator by the number in the hundreds place value and add the carried number (1):
5×2+1=11

Write 1 in the hundreds place.

Because the result is greater than 9, carry the 1 to the thousands place.

The solution is: 1,125