We look at the division of 55201035 by 420 
We're looking to find how many times 420 goes into 55201035.

Step 1:
The number 420 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 420

On to step 2:
420 goes into 55 0 times with a remainder of 55.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 55 leaves us with 55.
Include the next digit (2) from the dividend after 55, then repeat: 552 / 420

Going ahead to step 3:
If we divide 552 by 420, we get 1 and a remainder of 132.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 420 from 552 and we're left with 132.
Include the next digit (0) from the dividend after 132, then repeat: 1320 / 420

Moving on to step 4:
The number 420 fits into 1320 3 times, leaving a remainder of 60.
Write down 3 as next digit of the result. 
Result so far: 13.0
If we subtract 1260 from 1320, we get 60.
Include the next digit (1) from the dividend after 60, then repeat: 601 / 420

Going ahead to step 5:
420 goes into 601 1 times with a remainder of 181.
The number 1 becomes the next digit in our result. 
Result so far: 131.0
Subtracting 420 from 601 leaves us with 181.
Grab the next digit (0) from the dividend, add it to 181, then carry on: 1810 / 420

Advancing to step 6:
420 goes into 1810 4 times with a remainder of 130.
Write down 4 as next digit of the result. 
Result so far: 1314.0
If we subtract 1680 from 1810, we get 130.
Bring next digit (3) of the dividend behind the 130 and repeat the process: 1303 / 420

Advancing to step 7:
When dividing 1303 by 420, we get 3 with a remainder of 43.
The number 3 becomes the next digit in our result. 
Result so far: 13143.0
Subtract 1260 from 1303 to get 43.
Include the next digit (5) from the dividend after 43, then repeat: 435 / 420

Moving on to step 8:
The number 420 fits into 435 1 times, leaving a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 131431.0
If we take 420 away from 435, we end up 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.

Advancing to step 9:
If we divide 150 by 420, we get 0 and a remainder of 150.
The number 0 becomes the next digit in our result. 
Result so far: 131431.0
The remainder is 150 after subtracting 0 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 10:
If we divide 1500 by 420, we get 3 and a remainder of 240.
Write down 3 as next digit of the result. 
Result so far: 131431.03
The remainder is 240 after subtracting 1260 from 1500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 11:
The number 420 fits into 2400 5 times, leaving a remainder of 300.
Write down 5 as next digit of the result. 
Result so far: 131431.035
If we take 2100 away from 2400, we end up with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Advancing to step 12:
3000 divided by 420 is 7 with a remainder of 60.
Put 7 as the next digit of the answer. 
Result so far: 131431.0357
Deduct 2940 from 3000 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 13:
The number 420 fits into 600 1 times, leaving a remainder of 180.
The number 1 becomes the next digit in our result. 
Result so far: 131431.03571
The remainder is 180 after subtracting 420 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

On to step 14:
If we divide 1800 by 420, we get 4 and a remainder of 120.
The number 4 becomes the next digit in our result. 
Result so far: 131431.035714
If we subtract 1680 from 1800, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Let's proceed to step 15:
420 can be fit into 1200 2 times, resulting in a remainder of 360.
Use 2 as the next digit of our solution. 
Result so far: 131431.0357142
Subtracting 840 from 1200 leaves us with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 16:
3600 divided by 420 is 8 with a remainder of 240.
Put 8 as the next digit of the answer. 
Result so far: 131431.03571428
Deduct 3360 from 3600 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

The quotient of the division is 131431.03571428, and the remainder is 2.4e-07.