Solution - Long multiplication

Start by multiplying the ones digit (6) of the multiplier 6 by each digit of the multiplicand 42, from right to left.

Multiply the ones digit (6) of the multiplicator by the number in the ones place value:
6×2=12

Write 2 in the ones place.

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

Multiply the ones digit (6) of the multiplicator by the number in the tens place value and add the carried number (1):
6×4+1=25

Write 5 in the tens place.

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

The solution is: 252