How to calculate 87 multiplied by 21 using long multiplication

How to calculate 87 multiplied by 21

How to calculate 87 multiplied by 21 using long multiplication. Here is step-by-step how to calculate 87 times 21 using long multiplication:

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

	8	7
x	2	1

Step 2: Multiply
7 x 1 = 7. Put 7 below the line and 0 as a reminder on top:

	0
	8	7
x	2	1
		7

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

	8	7
x	2	1
	8	7

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

	8	7
x	2	1
	8	7
+		0

Step 5: Multiply
2 x 7 = 14. Put 4 below the line and 1 as a reminder on top:

	1
	8	7
x	2	1
	8	7
+	4	0

Step 6: Multiply
2 x 8 = 16. Take 16 and add 1 from the previous step to get 17. Enter 17 at the bottom:

			8	7
x			2	1
			8	7
+	1	7	4	0

Step 7: Add to get answer
Add up the bottom two numbers (87 + 1740 = 1827) to get the answer:

			8	7
x			2	1
			8	7
+	1	7	4	0
=	1	8	2	7

The bottom line is the answer. Therefore, 87 times 21 equals:

1827

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How to calculate 88 multiplied by 21
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