63714981 ÷ 421 
We want to figure out the number of times 63714981 can be divided by 421.

On to step 1:
421 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 421

Let's proceed to step 2:
When dividing 63 by 421, we get 0 with a remainder of 63.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Append the next digit (7) from the dividend to 63 and continue with: 637 / 421

Let's proceed to step 3:
The number 421 fits into 637 1 times, leaving a remainder of 216.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 421 away from 637, we end up with 216.
Grab the next digit (1) from the dividend, add it to 216, then carry on: 2161 / 421

Step 4:
421 goes into 2161 5 times with a remainder of 56.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Deduct 2105 from 2161 and we're left with 56.
Take the next digit (4) from the dividend and append it to 56, then repeat: 564 / 421

Advancing to step 5:
421 can be fit into 564 1 times, resulting in a remainder of 143.
The number 1 becomes the next digit in our result. 
Result so far: 151.0
Deduct 421 from 564 and we're left with 143.
Include the next digit (9) from the dividend after 143, then repeat: 1439 / 421

Step 6:
If we divide 1439 by 421, we get 3 and a remainder of 176.
Write down 3 as next digit of the result. 
Result so far: 1513.0
If we take 1263 away from 1439, we end up with 176.
Include the next digit (8) from the dividend after 176, then repeat: 1768 / 421

Moving on to step 7:
When dividing 1768 by 421, we get 4 with a remainder of 84.
Write down 4 as next digit of the result. 
Result so far: 15134.0
If we subtract 1684 from 1768, we get 84.
Bring next digit (1) of the dividend behind the 84 and repeat the process: 841 / 421

Going ahead to step 8:
When dividing 841 by 421, we get 1 with a remainder of 420.
Put 1 as the next digit of the answer. 
Result so far: 151341.0
The remainder is 420 after subtracting 421 from 841.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Step 9:
When dividing 4200 by 421, we get 9 with a remainder of 411.
Write down 9 as next digit of the result. 
Result so far: 151341.9
Subtracting 3789 from 4200 leaves us with 411.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4110, and continue the process.

On to step 10:
421 can be fit into 4110 9 times, resulting in a remainder of 321.
Record the quotient 9 as the next digit in the result. 
Result so far: 151341.99
If we take 3789 away from 4110, we end up with 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

The final outcome is 151341.99, with a leftover of 0.321.