We look at the division of 21237259 by 373 
Our goal is to divide 21237259 by 373.

Advancing to step 1:
373 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 373

Let's proceed to step 2:
373 can be fit into 21 0 times, resulting in a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Take the next digit (2) from the dividend and append it to 21, then repeat: 212 / 373

Going ahead to step 3:
212 divided by 373 is 0 with a remainder of 212.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 212 leaves us with 212.
Grab the next digit (3) from the dividend, add it to 212, then carry on: 2123 / 373

On to step 4:
2123 divided by 373 is 5 with a remainder of 258.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 258 after subtracting 1865 from 2123.
Include the next digit (7) from the dividend after 258, then repeat: 2587 / 373

Moving on to step 5:
If we divide 2587 by 373, we get 6 and a remainder of 349.
Record the quotient 6 as the next digit in the result. 
Result so far: 56.0
If we take 2238 away from 2587, we end up with 349.
Include the next digit (2) from the dividend after 349, then repeat: 3492 / 373

Moving on to step 6:
If we divide 3492 by 373, we get 9 and a remainder of 135.
The number 9 becomes the next digit in our result. 
Result so far: 569.0
The remainder is 135 after subtracting 3357 from 3492.
Append the next digit (5) from the dividend to 135 and continue with: 1355 / 373

Moving on to step 7:
373 goes into 1355 3 times with a remainder of 236.
Record the quotient 3 as the next digit in the result. 
Result so far: 5693.0
If we subtract 1119 from 1355, we get 236.
Grab the next digit (9) from the dividend, add it to 236, then carry on: 2369 / 373

Step 8:
When dividing 2369 by 373, we get 6 with a remainder of 131.
Write down 6 as next digit of the result. 
Result so far: 56936.0
Deduct 2238 from 2369 and we're left with 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

Moving on to step 9:
373 goes into 1310 3 times with a remainder of 191.
Put 3 as the next digit of the answer. 
Result so far: 56936.3
If we take 1119 away from 1310, we end up with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Moving on to step 10:
373 goes into 1910 5 times with a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 56936.35
The remainder is 45 after subtracting 1865 from 1910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 11:
450 divided by 373 is 1 with a remainder of 77.
Use 1 as the next digit of our solution. 
Result so far: 56936.351
If we take 373 away from 450, we end up with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Moving on to step 12:
770 divided by 373 is 2 with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 56936.3512
If we take 746 away from 770, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 13:
373 can be fit into 240 0 times, resulting in a remainder of 240.
The next digit of our result is 0. 
Result so far: 56936.3512
If we subtract 0 from 240, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Advancing to step 14:
The number 373 fits into 2400 6 times, leaving a remainder of 162.
The next digit of our result is 6. 
Result so far: 56936.351206
The remainder is 162 after subtracting 2238 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Step 15:
1620 divided by 373 is 4 with a remainder of 128.
Use 4 as the next digit of our solution. 
Result so far: 56936.3512064
Subtract 1492 from 1620 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Moving on to step 16:
When dividing 1280 by 373, we get 3 with a remainder of 161.
Write down 3 as next digit of the result. 
Result so far: 56936.35120643
If we take 1119 away from 1280, we end up with 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Our division results in 56936.35120643 with a remaining 1.61e-07.