Quotient, remainder, decimal and the long-division steps — then the multiplication that proves it
Enter the number being divided and the number you are dividing by. The calculator gives the whole-number answer with its remainder, the exact decimal, every step of the long division written out, and the multiplication that checks the result. That last line is the useful habit: a division is only finished when quotient × divisor + remainder gives back the number you started with.
17. 289 is 17², so dividing it by 17 leaves 17 with no remainder.
13, because 13 × 13 = 169.
Multiply the quotient by the divisor and add the remainder. If you get back the original number, the division is right: 7 × 7 + 1 = 50 checks 50 ÷ 7 = 7 r 1.
Divide the remainder by the divisor and add it to the whole-number answer. 50 ÷ 7 = 7 r 1, and 1 ÷ 7 = 0.142857…, so 7.142857…
It has no answer. Division asks how many of the divisor make the dividend, and no number of zeros ever adds up to anything but zero.