# Evaluate 3.14*25 3.14⋅25
Multiply using long multiplication.
Multiply 5 by 4. Place the ones digit (0) in the result line and carry the tens digit (2). There is one result line for each digit in 25.
 2 3 .1 4 ⨯ 2 5 0
Multiply 5 by 1 and add the carried 2. Place the result in the next column in the result line. There is one result line for each digit in 25.
 2 3 0.1 4 ⨯ 2 5 7 0
Multiply 5 by 3. Place the ones digit (5) in the result line and carry the tens digit (1). There is one result line for each digit in 25.
 3 .1 4 ⨯ 2 5 1 5 7 0
Multiply 2 by 4. Place the result in the next column in the result line. There is one result line for each digit in 25.
 3 .1 4 ⨯ 2 5 1 5 7 0 8
Multiply 2 by 1. Place the result in the next column in the result line. There is one result line for each digit in 25.
 3 .1 4 ⨯ 2 5 1 5 7 0 2 8
Multiply 2 by 3. Place the result in the next column in the result line. There is one result line for each digit in 25.
 3 .1 4 ⨯ 2 5 1 5 7 0 6 2 8
Add the numbers in each column. In this case, add 0+0, then place the 0 in the result line.
 3 .1 4 ⨯ 2 5 1 5 7 0 6 2 8 0
Add the numbers in each column. In this case, add 7+8, then place the 5 in the result line and carry the 1.
 3 .1 4 ⨯ 2 5 1 5 7 0 6 2 8 5 0
Add the numbers in each column. In this case, add 5+2+1, then place the 8 in the result line.
 3 .1 4 ⨯ 2 5 1 5 7 0 6 2 8 8 5 0
Add the numbers in each column. In this case, add 1+6, then place the 7 in the result line.
 3 .1 4 ⨯ 2 5 1 5 7 0 6 2 8 7 8 5 0
 3 .1 4 ⨯ 2 5 1 5 7 0 6 2 8 7 8 5 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.
78.5
Evaluate 3.14*25

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