Let's divide 931945 by 21
Let's see how many times 21 fits into 931945.

Moving on to step 1:
9 divided by 21 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Include the next digit (3) from the dividend after 9, then repeat: 93 / 21

Going ahead to step 2:
The number 21 fits into 93 4 times, leaving a remainder of 9.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 84 from 93 to get 9.
Fetch the next digit (1) from the dividend, attach it to 9 and continue: 91 / 21

Moving on to step 3:
21 goes into 91 4 times with a remainder of 7.
Write down 4 as next digit of the result. 
Result so far: 44.0
Subtract 84 from 91 to get 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 21

Going ahead to step 4:
If we divide 79 by 21, we get 3 and a remainder of 16.
The number 3 becomes the next digit in our result. 
Result so far: 443.0
If we take 63 away from 79, we end up with 16.
Grab the next digit (4) from the dividend, add it to 16, then carry on: 164 / 21

Advancing to step 5:
21 can be fit into 164 7 times, resulting in a remainder of 17.
Record the quotient 7 as the next digit in the result. 
Result so far: 4437.0
The remainder is 17 after subtracting 147 from 164.
Fetch the next digit (5) from the dividend, attach it to 17 and continue: 175 / 21

Going ahead to step 6:
The number 21 fits into 175 8 times, leaving a remainder of 7.
The next digit of our result is 8. 
Result so far: 44378.0
Deduct 168 from 175 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
The number 21 fits into 70 3 times, leaving a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 44378.3
Subtract 63 from 70 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 8:
21 goes into 70 3 times with a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 44378.33
Subtract 63 from 70 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Our division results in 44378.33 with a remaining 0.007.