We're dividing 71585598 by 421 
We want to divide 71585598 by 421.

On to step 1:
The number 421 fits into 7 0 times, leaving a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 421

On to step 2:
421 goes into 71 0 times with a remainder of 71.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 71, we end up with 71.
Grab the next digit (5) from the dividend, add it to 71, then carry on: 715 / 421

On to step 3:
421 goes into 715 1 times with a remainder of 294.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 421 from 715 leaves us with 294.
Take the next digit (8) from the dividend and append it to 294, then repeat: 2948 / 421

Going ahead to step 4:
When dividing 2948 by 421, we get 7 with a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
The remainder is 1 after subtracting 2947 from 2948.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 421

On to step 5:
421 can be fit into 15 0 times, resulting in a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 170.0
If we subtract 0 from 15, we get 15.
Append the next digit (5) from the dividend to 15 and continue with: 155 / 421

Going ahead to step 6:
421 goes into 155 0 times with a remainder of 155.
Record the quotient 0 as the next digit in the result. 
Result so far: 1700.0
Subtracting 0 from 155 leaves us with 155.
Grab the next digit (9) from the dividend, add it to 155, then carry on: 1559 / 421

Moving on to step 7:
The number 421 fits into 1559 3 times, leaving a remainder of 296.
The number 3 becomes the next digit in our result. 
Result so far: 17003.0
If we subtract 1263 from 1559, we get 296.
Bring next digit (8) of the dividend behind the 296 and repeat the process: 2968 / 421

Let's proceed to step 8:
421 can be fit into 2968 7 times, resulting in a remainder of 21.
The number 7 becomes the next digit in our result. 
Result so far: 170037.0
If we subtract 2947 from 2968, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 9:
210 divided by 421 is 0 with a remainder of 210.
The number 0 becomes the next digit in our result. 
Result so far: 170037.0
Subtract 0 from 210 to get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Step 10:
421 goes into 2100 4 times with a remainder of 416.
The next digit of our result is 4. 
Result so far: 170037.04
Subtracting 1684 from 2100 leaves us with 416.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

Step 11:
The number 421 fits into 4160 9 times, leaving a remainder of 371.
Record the quotient 9 as the next digit in the result. 
Result so far: 170037.049
Deduct 3789 from 4160 and we're left with 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3710, and continue the process.

On to step 12:
The number 421 fits into 3710 8 times, leaving a remainder of 342.
Record the quotient 8 as the next digit in the result. 
Result so far: 170037.0498
Deduct 3368 from 3710 and we're left with 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

Moving on to step 13:
The number 421 fits into 3420 8 times, leaving a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 170037.04988
Deduct 3368 from 3420 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final result is 170037.04988 with a remainder of 5.2e-05.