71214836 ÷ 421 
Our goal is to divide 71214836 by 421.

Step 1:
When dividing 7 by 421, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 421

Step 2:
When dividing 71 by 421, we get 0 with a remainder of 71.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 71 leaves us with 71.
Include the next digit (2) from the dividend after 71, then repeat: 712 / 421

Going ahead to step 3:
421 can be fit into 712 1 times, resulting in a remainder of 291.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 421 away from 712, we end up with 291.
Append the next digit (1) from the dividend to 291 and continue with: 2911 / 421

Going ahead to step 4:
The number 421 fits into 2911 6 times, leaving a remainder of 385.
The next digit of our result is 6. 
Result so far: 16.0
The remainder is 385 after subtracting 2526 from 2911.
Append the next digit (4) from the dividend to 385 and continue with: 3854 / 421

Step 5:
When dividing 3854 by 421, we get 9 with a remainder of 65.
The number 9 becomes the next digit in our result. 
Result so far: 169.0
If we subtract 3789 from 3854, we get 65.
Bring next digit (8) of the dividend behind the 65 and repeat the process: 658 / 421

On to step 6:
When dividing 658 by 421, we get 1 with a remainder of 237.
The next digit of our result is 1. 
Result so far: 1691.0
If we subtract 421 from 658, we get 237.
Take the next digit (3) from the dividend and append it to 237, then repeat: 2373 / 421

Advancing to step 7:
When dividing 2373 by 421, we get 5 with a remainder of 268.
Write down 5 as next digit of the result. 
Result so far: 16915.0
Deduct 2105 from 2373 and we're left with 268.
Append the next digit (6) from the dividend to 268 and continue with: 2686 / 421

Going ahead to step 8:
2686 divided by 421 is 6 with a remainder of 160.
Write down 6 as next digit of the result. 
Result so far: 169156.0
Subtract 2526 from 2686 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Let's proceed to step 9:
If we divide 1600 by 421, we get 3 and a remainder of 337.
Record the quotient 3 as the next digit in the result. 
Result so far: 169156.3
Subtracting 1263 from 1600 leaves us with 337.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3370, and continue the process.

Going ahead to step 10:
The number 421 fits into 3370 8 times, leaving a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 169156.38
If we take 3368 away from 3370, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 11:
The number 421 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 169156.38
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 12:
421 goes into 200 0 times with a remainder of 200.
Record the quotient 0 as the next digit in the result. 
Result so far: 169156.38
If we subtract 0 from 200, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

In conclusion, the division gives 169156.38 with a balance of 0.002.