How to calculate 81 multiplied by 19


Long Multiplication

How to calculate 81 multiplied by 19 using long multiplication. Here is step-by-step how to calculate 81 times 19 using long multiplication:

Step 1: Setup
Set up your multiplication problem like this:

              8 1
      x       1 9
                 

Step 2: Multiply
1 x 9 = 9. Put 9 below the line and 0 as a reminder on top:

              0  
              8 1
      x       1 9
                9

Step 3: Multiply
9 x 8 = 72. Take 72 and add 0 from the previous step to get 72. Enter 72 at the bottom:

              8 1
      x       1 9
            7 2 9

Step 4: Add 0
Enter a 0 at the bottom right as a place holder, because you now move over one digit:

              8 1
      x       1 9
            7 2 9
      +         0

Step 5: Multiply
1 x 1 = 1. Put 1 below the line and 0 as a reminder on top:

              0  
              8 1
      x       1 9
            7 2 9
      +       1 0

Step 6: Multiply
1 x 8 = 8. Take 8 and add 0 from the previous step to get 8. Enter 8 at the bottom:

              8 1
      x       1 9
            7 2 9
      +     8 1 0

Step 7: Add to get answer
Add up the bottom two numbers (729 + 810 = 1539) to get the answer:

              8 1
      x       1 9
            7 2 9
      +     8 1 0
      =   1 5 3 9

The bottom line is the answer. Therefore, 81 times 19 equals:

1539


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How to calculate 82 multiplied by 19
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