We look at the division of 63985837 by 901 
We want to divide 63985837 by 901.

Moving on to step 1:
If we divide 6 by 901, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 901

Step 2:
If we divide 63 by 901, we get 0 and a remainder of 63.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 63 to get 63.
Append the next digit (9) from the dividend to 63 and continue with: 639 / 901

Step 3:
If we divide 639 by 901, we get 0 and a remainder of 639.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 639 to get 639.
Take the next digit (8) from the dividend and append it to 639, then repeat: 6398 / 901

Moving on to step 4:
901 can be fit into 6398 7 times, resulting in a remainder of 91.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we subtract 6307 from 6398, we get 91.
Include the next digit (5) from the dividend after 91, then repeat: 915 / 901

Going ahead to step 5:
901 goes into 915 1 times with a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 71.0
Subtracting 901 from 915 leaves us with 14.
Fetch the next digit (8) from the dividend, attach it to 14 and continue: 148 / 901

Let's proceed to step 6:
901 can be fit into 148 0 times, resulting in a remainder of 148.
Put 0 as the next digit of the answer. 
Result so far: 710.0
If we subtract 0 from 148, we get 148.
Fetch the next digit (3) from the dividend, attach it to 148 and continue: 1483 / 901

On to step 7:
901 goes into 1483 1 times with a remainder of 582.
The next digit of our result is 1. 
Result so far: 7101.0
If we take 901 away from 1483, we end up with 582.
Grab the next digit (7) from the dividend, add it to 582, then carry on: 5827 / 901

Going ahead to step 8:
When dividing 5827 by 901, we get 6 with a remainder of 421.
The number 6 becomes the next digit in our result. 
Result so far: 71016.0
Deduct 5406 from 5827 and we're left with 421.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4210, and continue the process.

Step 9:
901 can be fit into 4210 4 times, resulting in a remainder of 606.
Record the quotient 4 as the next digit in the result. 
Result so far: 71016.4
If we take 3604 away from 4210, we end up with 606.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6060, and continue the process.

Going ahead to step 10:
901 can be fit into 6060 6 times, resulting in a remainder of 654.
The next digit of our result is 6. 
Result so far: 71016.46
The remainder is 654 after subtracting 5406 from 6060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6540, and continue the process.

Let's proceed to step 11:
901 goes into 6540 7 times with a remainder of 233.
Record the quotient 7 as the next digit in the result. 
Result so far: 71016.467
Subtracting 6307 from 6540 leaves us with 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

On to step 12:
When dividing 2330 by 901, we get 2 with a remainder of 528.
Write down 2 as next digit of the result. 
Result so far: 71016.4672
Deduct 1802 from 2330 and we're left with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

Let's proceed to step 13:
901 can be fit into 5280 5 times, resulting in a remainder of 775.
Use 5 as the next digit of our solution. 
Result so far: 71016.46725
Subtract 4505 from 5280 to get 775.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7750, and continue the process.

Step 14:
When dividing 7750 by 901, we get 8 with a remainder of 542.
The next digit of our result is 8. 
Result so far: 71016.467258
Subtract 7208 from 7750 to get 542.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5420, and continue the process.

Step 15:
The number 901 fits into 5420 6 times, leaving a remainder of 14.
Put 6 as the next digit of the answer. 
Result so far: 71016.4672586
Deduct 5406 from 5420 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 16:
When dividing 140 by 901, we get 0 with a remainder of 140.
The number 0 becomes the next digit in our result. 
Result so far: 71016.4672586
Subtracting 0 from 140 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

The quotient of the division is 71016.4672586, and the remainder is 1.4e-07.