We look at the division of 12421887 by 57 
We want to figure out the number of times 12421887 can be divided by 57.

Going ahead to step 1:
57 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 57

Going ahead to step 2:
57 can be fit into 12 0 times, resulting in a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Grab the next digit (4) from the dividend, add it to 12, then carry on: 124 / 57

Step 3:
The number 57 fits into 124 2 times, leaving a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 10 after subtracting 114 from 124.
Grab the next digit (2) from the dividend, add it to 10, then carry on: 102 / 57

Let's proceed to step 4:
57 goes into 102 1 times with a remainder of 45.
Write down 1 as next digit of the result. 
Result so far: 21.0
If we subtract 57 from 102, we get 45.
Include the next digit (1) from the dividend after 45, then repeat: 451 / 57

Going ahead to step 5:
The number 57 fits into 451 7 times, leaving a remainder of 52.
Record the quotient 7 as the next digit in the result. 
Result so far: 217.0
If we subtract 399 from 451, we get 52.
Append the next digit (8) from the dividend to 52 and continue with: 528 / 57

Advancing to step 6:
When dividing 528 by 57, we get 9 with a remainder of 15.
The number 9 becomes the next digit in our result. 
Result so far: 2179.0
Subtracting 513 from 528 leaves us with 15.
Append the next digit (8) from the dividend to 15 and continue with: 158 / 57

Advancing to step 7:
57 goes into 158 2 times with a remainder of 44.
Use 2 as the next digit of our solution. 
Result so far: 21792.0
Deduct 114 from 158 and we're left with 44.
Bring next digit (7) of the dividend behind the 44 and repeat the process: 447 / 57

Step 8:
57 goes into 447 7 times with a remainder of 48.
Use 7 as the next digit of our solution. 
Result so far: 217927.0
If we subtract 399 from 447, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 9:
When dividing 480 by 57, we get 8 with a remainder of 24.
Use 8 as the next digit of our solution. 
Result so far: 217927.8
If we take 456 away from 480, 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.

Advancing to step 10:
240 divided by 57 is 4 with a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 217927.84
Deduct 228 from 240 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 11:
120 divided by 57 is 2 with a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 217927.842
Subtracting 114 from 120 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 12:
57 can be fit into 60 1 times, resulting in a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 217927.8421
Subtracting 57 from 60 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 13:
If we divide 30 by 57, we get 0 and a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 217927.8421
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 14:
The number 57 fits into 300 5 times, leaving a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 217927.842105
Subtracting 285 from 300 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 15:
The number 57 fits into 150 2 times, leaving a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 217927.8421052
If we subtract 114 from 150, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 16:
57 goes into 360 6 times with a remainder of 18.
Put 6 as the next digit of the answer. 
Result so far: 217927.84210526
If we subtract 342 from 360, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

In conclusion, the division gives 217927.84210526 with a balance of 1.8e-08.