Solution - Long multiplication

Start by multiplying the ones digit (7) of the multiplier 7 by each digit of the multiplicand 104, from right to left.

Multiply the ones digit (7) of the multiplicator by the number in the ones place value:
7×4=28

Write 8 in the ones place.

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

Multiply the ones digit (7) of the multiplicator by the number in the tens place value and add the carried number (2):
7×0+2=2

Write 2 in the tens place.

Multiply the ones digit (7) of the multiplicator by the number in the hundreds place value:
7×1=7

Write 7 in the hundreds place.

The solution is: 728