We look at the division of 53259167 by 421 
We want to divide 53259167 by 421.

Let's proceed to step 1:
421 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 421

Going ahead to step 2:
When dividing 53 by 421, we get 0 with a remainder of 53.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 53 leaves us with 53.
Include the next digit (2) from the dividend after 53, then repeat: 532 / 421

Advancing to step 3:
532 divided by 421 is 1 with a remainder of 111.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 421 from 532 to get 111.
Bring next digit (5) of the dividend behind the 111 and repeat the process: 1115 / 421

Moving on to step 4:
421 can be fit into 1115 2 times, resulting in a remainder of 273.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Deduct 842 from 1115 and we're left with 273.
Grab the next digit (9) from the dividend, add it to 273, then carry on: 2739 / 421

Going ahead to step 5:
When dividing 2739 by 421, we get 6 with a remainder of 213.
Put 6 as the next digit of the answer. 
Result so far: 126.0
If we take 2526 away from 2739, we end up with 213.
Bring next digit (1) of the dividend behind the 213 and repeat the process: 2131 / 421

Moving on to step 6:
2131 divided by 421 is 5 with a remainder of 26.
Put 5 as the next digit of the answer. 
Result so far: 1265.0
If we subtract 2105 from 2131, we get 26.
Take the next digit (6) from the dividend and append it to 26, then repeat: 266 / 421

Advancing to step 7:
421 goes into 266 0 times with a remainder of 266.
The number 0 becomes the next digit in our result. 
Result so far: 12650.0
Subtracting 0 from 266 leaves us with 266.
Bring next digit (7) of the dividend behind the 266 and repeat the process: 2667 / 421

On to step 8:
421 can be fit into 2667 6 times, resulting in a remainder of 141.
Put 6 as the next digit of the answer. 
Result so far: 126506.0
If we take 2526 away from 2667, we end up with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Going ahead to step 9:
1410 divided by 421 is 3 with a remainder of 147.
Record the quotient 3 as the next digit in the result. 
Result so far: 126506.3
Subtracting 1263 from 1410 leaves us with 147.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1470, and continue the process.

Let's proceed to step 10:
1470 divided by 421 is 3 with a remainder of 207.
Record the quotient 3 as the next digit in the result. 
Result so far: 126506.33
Subtract 1263 from 1470 to get 207.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2070, and continue the process.

The quotient of the division is 126506.33, and the remainder is 0.207.