Long Division Problem: Divide 640 by 8 Using Standard Method

To solve this problem, we'll divide 640 by 8 using long division.

• Step 1: Set up the long division, where 640 is the dividend inside the division bracket, and 8 is the divisor outside.

• Step 2: Determine how many times 8 goes into the first digit, 6. It does not go into 6 since 6 is less than 8. Move to the next digit.

• Step 3: Consider the first two digits, 64. 8 goes into 64 a total of 8 times since $8 \times 8 = 64$. Write 8 above the division line.

• Step 4: Subtract 64 from 64, which results in 0. Bring down the next digit, 0, from the dividend, making it 00.

• Step 5: Determine how many times 8 goes into 0. It goes 0 times, so write 0 as the next digit of the quotient.

• Step 6: The final required division is complete. The quotient is $80$.

The result of dividing 640 by 8 is $80$. Therefore, the correct answer is choice 3: $80$.