We look at the division of 37504856 by 21 
We're looking to find how many times 21 goes into 37504856.

On to step 1:
When dividing 3 by 21, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Bring next digit (7) of the dividend behind the 3 and repeat the process: 37 / 21

Let's proceed to step 2:
When dividing 37 by 21, we get 1 with a remainder of 16.
The next digit of our result is 1. 
Result so far: 1.0
If we take 21 away from 37, we end up with 16.
Take the next digit (5) from the dividend and append it to 16, then repeat: 165 / 21

Moving on to step 3:
21 goes into 165 7 times with a remainder of 18.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Subtract 147 from 165 to get 18.
Grab the next digit (0) from the dividend, add it to 18, then carry on: 180 / 21

Going ahead to step 4:
If we divide 180 by 21, we get 8 and a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 178.0
Subtract 168 from 180 to get 12.
Append the next digit (4) from the dividend to 12 and continue with: 124 / 21

On to step 5:
If we divide 124 by 21, we get 5 and a remainder of 19.
The number 5 becomes the next digit in our result. 
Result so far: 1785.0
Subtract 105 from 124 to get 19.
Append the next digit (8) from the dividend to 19 and continue with: 198 / 21

On to step 6:
If we divide 198 by 21, we get 9 and a remainder of 9.
The next digit of our result is 9. 
Result so far: 17859.0
If we subtract 189 from 198, we get 9.
Take the next digit (5) from the dividend and append it to 9, then repeat: 95 / 21

Step 7:
When dividing 95 by 21, we get 4 with a remainder of 11.
The next digit of our result is 4. 
Result so far: 178594.0
Deduct 84 from 95 and we're left with 11.
Take the next digit (6) from the dividend and append it to 11, then repeat: 116 / 21

Step 8:
The number 21 fits into 116 5 times, leaving a remainder of 11.
Record the quotient 5 as the next digit in the result. 
Result so far: 1785945.0
Subtract 105 from 116 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 9:
When dividing 110 by 21, we get 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 1785945.5
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 10:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 1785945.52
If we take 42 away from 50, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 11:
When dividing 80 by 21, we get 3 with a remainder of 17.
The next digit of our result is 3. 
Result so far: 1785945.523
If we subtract 63 from 80, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 12:
The number 21 fits into 170 8 times, leaving a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 1785945.5238
The remainder is 2 after subtracting 168 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 13:
The number 21 fits into 20 0 times, leaving a remainder of 20.
The next digit of our result is 0. 
Result so far: 1785945.5238
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 14:
If we divide 200 by 21, we get 9 and a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 1785945.523809
If we subtract 189 from 200, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 15:
21 can be fit into 110 5 times, resulting in a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 1785945.5238095
If we take 105 away from 110, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 16:
When dividing 50 by 21, we get 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 1785945.52380952
Subtracting 42 from 50 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 1785945.52380952, with a leftover of 8e-09.