Solution - Long multiplication

Because the hundred thousands digit of the multiplicator equals 0, skip to the next digit.

Proceed by multiplying the millions digit (2) of the multiplier (12,000,000) by each digit of the multiplicand (54), from right to left.

Because digit (2) is in millions place, we shift partial result by 6 place(s) by placing 6 zero(s).

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

Write 8 in the millions place.

Multiply the millions digit (2) of the multiplicator by the number in the tens place value:
2×5=10

Write 0 in the ten millions place.

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

108,000,000 is the first partial product.

Proceed by multiplying the ten millions digit (1) of the multiplier (12,000,000) by each digit of the multiplicand (54), from right to left.

Because digit (1) is in ten millions place, we shift partial result by 7 place(s) by placing 7 zero(s).

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

Write 4 in the ten millions place.

Multiply the ten millions digit (1) of the multiplicator by the number in the tens place value:
1×5=5

Write 5 in the hundred millions place.

540,000,000 is the second partial product.

108000000+540000000=648000000 long addition steps can be seen here

The solution is: 648,000,000