Solution - Long multiplication

Start by multiplying the ones digit (2) of the multiplier 2 by each digit of the multiplicand 20,850,000, from right to left.

Multiply the ones digit (2) of the multiplicator by the number in the ones place value:
2×0=0

Write 0 in the ones place.

Multiply the ones digit (2) of the multiplicator by the number in the tens place value:
2×0=0

Write 0 in the tens place.

Multiply the ones digit (2) of the multiplicator by the number in the hundreds place value:
2×0=0

Write 0 in the hundreds place.

Multiply the ones digit (2) of the multiplicator by the number in the thousands place value:
2×0=0

Write 0 in the thousands place.

Multiply the ones digit (2) of the multiplicator by the number in the ten thousands place value:
2×5=10

Write 0 in the ten thousands place.

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

Multiply the ones digit (2) of the multiplicator by the number in the hundred thousands place value and add the carried number (1):
2×8+1=17

Write 7 in the hundred thousands place.

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

Multiply the ones digit (2) of the multiplicator by the number in the millions place value and add the carried number (1):
2×0+1=1

Write 1 in the millions place.

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

Write 4 in the ten millions place.

The solution is: 41,700,000