Hello. My son has to divide 1923.6 by 21. I was helping him dueit step by step &

Hello. My son has to divide 1923.6 by 21. I was helping him dueit step by step & it was taking forever. He said that histeacher wanted it solved without any remainders. I got up to 7places after the decimal with no end in sight. I finally did it onthe calculator & it have me an answer of 91.6. I dontunderstand where I went wrong. Can u show me step by step Please