934387 ÷ 21 
We want to figure out the number of times 934387 can be divided by 21.

On to step 1:
If we divide 9 by 21, we get 0 and a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 21

Going ahead to step 2:
21 can be fit into 93 4 times, resulting in a remainder of 9.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 84 from 93 to get 9.
Grab the next digit (4) from the dividend, add it to 9, then carry on: 94 / 21

Step 3:
21 can be fit into 94 4 times, resulting in a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 44.0
If we subtract 84 from 94, we get 10.
Append the next digit (3) from the dividend to 10 and continue with: 103 / 21

Step 4:
21 goes into 103 4 times with a remainder of 19.
The next digit of our result is 4. 
Result so far: 444.0
Subtracting 84 from 103 leaves us with 19.
Bring next digit (8) of the dividend behind the 19 and repeat the process: 198 / 21

Moving on to step 5:
21 goes into 198 9 times with a remainder of 9.
Put 9 as the next digit of the answer. 
Result so far: 4449.0
If we take 189 away from 198, we end up with 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 21

Step 6:
If we divide 97 by 21, we get 4 and a remainder of 13.
Put 4 as the next digit of the answer. 
Result so far: 44494.0
Subtracting 84 from 97 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 7:
If we divide 130 by 21, we get 6 and a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 44494.6
If we subtract 126 from 130, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 8:
The number 21 fits into 40 1 times, leaving a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 44494.61
The remainder is 19 after subtracting 21 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 9:
21 goes into 190 9 times with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 44494.619
The remainder is 1 after subtracting 189 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 10:
If we divide 10 by 21, we get 0 and a remainder of 10.
The next digit of our result is 0. 
Result so far: 44494.619
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 11:
The number 21 fits into 100 4 times, leaving a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 44494.61904
Deduct 84 from 100 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 12:
When dividing 160 by 21, we get 7 with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 44494.619047
Deduct 147 from 160 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 13:
21 can be fit into 130 6 times, resulting in a remainder of 4.
The next digit of our result is 6. 
Result so far: 44494.6190476
Subtracting 126 from 130 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 14:
40 divided by 21 is 1 with a remainder of 19.
The next digit of our result is 1. 
Result so far: 44494.61904761
Subtracting 21 from 40 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

In conclusion, the division gives 44494.61904761 with a balance of 1.9e-08.