Solution - Long multiplication

Start by multiplying the ones digit (4) of the multiplier 4 by each digit of the multiplicand 1,200, from right to left.

Multiply the ones digit (4) of the multiplicator by the number in the ones place value:
4×0=0

Write 0 in the ones place.

Multiply the ones digit (4) of the multiplicator by the number in the tens place value:
4×0=0

Write 0 in the tens place.

Multiply the ones digit (4) of the multiplicator by the number in the hundreds place value:
4×2=8

Write 8 in the hundreds place.

Multiply the ones digit (4) of the multiplicator by the number in the thousands place value:
4×1=4

Write 4 in the thousands place.

The solution is: 4,800