We look at the division of 40721901 by 401 
Let's see how many times 401 fits into 40721901.

Step 1:
When dividing 4 by 401, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 401

Moving on to step 2:
401 goes into 40 0 times with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Bring next digit (7) of the dividend behind the 40 and repeat the process: 407 / 401

Let's proceed to step 3:
The number 401 fits into 407 1 times, leaving a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 401 from 407, we get 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 401

Let's proceed to step 4:
62 divided by 401 is 0 with a remainder of 62.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtract 0 from 62 to get 62.
Grab the next digit (1) from the dividend, add it to 62, then carry on: 621 / 401

Going ahead to step 5:
The number 401 fits into 621 1 times, leaving a remainder of 220.
Write down 1 as next digit of the result. 
Result so far: 101.0
If we take 401 away from 621, we end up with 220.
Take the next digit (9) from the dividend and append it to 220, then repeat: 2209 / 401

Step 6:
2209 divided by 401 is 5 with a remainder of 204.
Put 5 as the next digit of the answer. 
Result so far: 1015.0
If we subtract 2005 from 2209, we get 204.
Include the next digit (0) from the dividend after 204, then repeat: 2040 / 401

Let's proceed to step 7:
If we divide 2040 by 401, we get 5 and a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 10155.0
If we subtract 2005 from 2040, we get 35.
Include the next digit (1) from the dividend after 35, then repeat: 351 / 401

On to step 8:
401 goes into 351 0 times with a remainder of 351.
Record the quotient 0 as the next digit in the result. 
Result so far: 101550.0
Deduct 0 from 351 and we're left with 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Let's proceed to step 9:
401 goes into 3510 8 times with a remainder of 302.
Use 8 as the next digit of our solution. 
Result so far: 101550.8
Subtracting 3208 from 3510 leaves us with 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Moving on to step 10:
If we divide 3020 by 401, we get 7 and a remainder of 213.
Use 7 as the next digit of our solution. 
Result so far: 101550.87
The remainder is 213 after subtracting 2807 from 3020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

Let's proceed to step 11:
If we divide 2130 by 401, we get 5 and a remainder of 125.
The next digit of our result is 5. 
Result so far: 101550.875
Subtracting 2005 from 2130 leaves us with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Let's proceed to step 12:
401 can be fit into 1250 3 times, resulting in a remainder of 47.
Put 3 as the next digit of the answer. 
Result so far: 101550.8753
If we take 1203 away from 1250, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 13:
When dividing 470 by 401, we get 1 with a remainder of 69.
The next digit of our result is 1. 
Result so far: 101550.87531
If we subtract 401 from 470, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 14:
When dividing 690 by 401, we get 1 with a remainder of 289.
The number 1 becomes the next digit in our result. 
Result so far: 101550.875311
If we subtract 401 from 690, we get 289.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2890, and continue the process.

The quotient of the division is 101550.875311, and the remainder is 2.89e-05.