How to calculate 86 multiplied by 85 using long multiplication

How to calculate 86 multiplied by 85

How to calculate 86 multiplied by 85 using long multiplication. Here is step-by-step how to calculate 86 times 85 using long multiplication:

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

	8	6
x	8	5

Step 2: Multiply
6 x 5 = 30. Put 0 below the line and 3 as a reminder on top:

	3
	8	6
x	8	5
		0

Step 3: Multiply
5 x 8 = 40. Take 40 and add 3 from the previous step to get 43. Enter 43 at the bottom:

		8	6
x		8	5
	4	3	0

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

		8	6
x		8	5
	4	3	0
+			0

Step 5: Multiply
8 x 6 = 48. Put 8 below the line and 4 as a reminder on top:

		4
		8	6
x		8	5
	4	3	0
+		8	0

Step 6: Multiply
8 x 8 = 64. Take 64 and add 4 from the previous step to get 68. Enter 68 at the bottom:

			8	6
x			8	5
		4	3	0
+	6	8	8	0

Step 7: Add to get answer
Add up the bottom two numbers (430 + 6880 = 7310) to get the answer:

			8	6
x			8	5
		4	3	0
+	6	8	8	0
=	7	3	1	0

The bottom line is the answer. Therefore, 86 times 85 equals:

7310

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How to calculate 87 multiplied by 85
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