Divide a decimal by a whole number by placing the decimal point in the quotient directly above the one in the dividend, then performing long division as usual.

To divide a decimal by a whole number using long division, set up the problem as you would for whole numbers. Place the decimal point in your answer directly above the decimal point in the dividend. Perform the division as usual, carrying remainders to the next digit. If you have a remainder after using all digits in the dividend, add placeholder zeros to the right of the decimal point in the dividend and continue dividing until the remainder is zero or you reach the desired level of precision. Alternatively, you can multiply both numbers by a power of 10 to make the dividend a whole number before dividing, then adjust the decimal point in your final answer.

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