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This is poorly typed, so I will assume you mean "what does 76 * 9 * 9 equal?"

This can be done with a calculator or by hand. (* = multiplied by)

By hand you would simply do long multiplication of 76 * 81 (since you should know that 9 squared is 81)

Note that on each line, everything in bold represents the same number (which equals 5670) and everything in italics represents the same number (which equals 486)

76 * 9 * 9 = 76 * 81

= (70 * 81) + (6 * 81)

= ((70 * 80) + (70 * 1)) + ((6 * 80) + (6 * 1))

= (5600 + 70) + (480 + 6)

= 5670 + 486

= 6156

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12y ago

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