# Multiply 1.18*15 1.18⋅15
Multiply using long multiplication.
Multiply 5 by 8. Place the ones digit (0) in the result line and carry the tens digit (4). There is one result line for each digit in 15.
 4 1 .1 8 ⨯ 1 5 0
Multiply 5 by 1 and add the carried 4. Place the result in the next column in the result line. There is one result line for each digit in 15.
 4 1 0.1 8 ⨯ 1 5 9 0
Multiply 5 by 1. Place the result in the next column in the result line. There is one result line for each digit in 15.
 1 .1 8 ⨯ 1 5 5 9 0
Multiply 1 by 8. Place the result in the next column in the result line. There is one result line for each digit in 15.
 1 .1 8 ⨯ 1 5 5 9 0 8
Multiply 1 by 1. Place the result in the next column in the result line. There is one result line for each digit in 15.
 1 .1 8 ⨯ 1 5 5 9 0 1 8
Multiply 1 by 1. Place the result in the next column in the result line. There is one result line for each digit in 15.
 1 .1 8 ⨯ 1 5 5 9 0 1 1 8
Add the numbers in each column. In this case, add 0+0, then place the 0 in the result line.
 1 .1 8 ⨯ 1 5 5 9 0 1 1 8 0
Add the numbers in each column. In this case, add 9+8, then place the 7 in the result line and carry the 1.
 1 .1 8 ⨯ 1 5 5 9 0 1 1 8 7 0
Add the numbers in each column. In this case, add 5+1+1, then place the 7 in the result line.
 1 .1 8 ⨯ 1 5 5 9 0 1 1 8 7 7 0
Add the numbers in each column. In this case, add 0+1, then place the 1 in the result line.
 1 .1 8 ⨯ 1 5 5 9 0 1 1 8 1 7 7 0
 1 .1 8 ⨯ 1 5 5 9 0 1 1 8 1 7 7 0
To find the number of decimal places needed in the answer, add the number of decimal places in the multiplier and multiplicand. In this case, there is a total of 2, so the answer must have 2 decimal places as well.
17.7
Multiply 1.18*15

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