We look at the division of 40053421 by 479 
We want to figure out the number of times 40053421 can be divided by 479.

On to step 1:
479 goes into 4 0 times with a remainder of 4.
Use 0 as the next digit of our solution. 
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 / 479

Let's proceed to step 2:
The number 479 fits into 40 0 times, leaving a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Bring next digit (0) of the dividend behind the 40 and repeat the process: 400 / 479

Moving on to step 3:
The number 479 fits into 400 0 times, leaving a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 400, we end up with 400.
Take the next digit (5) from the dividend and append it to 400, then repeat: 4005 / 479

Going ahead to step 4:
If we divide 4005 by 479, we get 8 and a remainder of 173.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 3832 from 4005 and we're left with 173.
Bring next digit (3) of the dividend behind the 173 and repeat the process: 1733 / 479

Step 5:
1733 divided by 479 is 3 with a remainder of 296.
The number 3 becomes the next digit in our result. 
Result so far: 83.0
Subtract 1437 from 1733 to get 296.
Fetch the next digit (4) from the dividend, attach it to 296 and continue: 2964 / 479

Moving on to step 6:
When dividing 2964 by 479, we get 6 with a remainder of 90.
Record the quotient 6 as the next digit in the result. 
Result so far: 836.0
If we take 2874 away from 2964, we end up with 90.
Append the next digit (2) from the dividend to 90 and continue with: 902 / 479

On to step 7:
479 goes into 902 1 times with a remainder of 423.
Put 1 as the next digit of the answer. 
Result so far: 8361.0
If we subtract 479 from 902, we get 423.
Grab the next digit (1) from the dividend, add it to 423, then carry on: 4231 / 479

On to step 8:
4231 divided by 479 is 8 with a remainder of 399.
The next digit of our result is 8. 
Result so far: 83618.0
Deduct 3832 from 4231 and we're left with 399.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3990, and continue the process.

On to step 9:
The number 479 fits into 3990 8 times, leaving a remainder of 158.
The number 8 becomes the next digit in our result. 
Result so far: 83618.8
Subtracting 3832 from 3990 leaves us with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

On to step 10:
1580 divided by 479 is 3 with a remainder of 143.
Write down 3 as next digit of the result. 
Result so far: 83618.83
The remainder is 143 after subtracting 1437 from 1580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

Going ahead to step 11:
When dividing 1430 by 479, we get 2 with a remainder of 472.
The next digit of our result is 2. 
Result so far: 83618.832
Subtracting 958 from 1430 leaves us with 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4720, and continue the process.

On to step 12:
479 can be fit into 4720 9 times, resulting in a remainder of 409.
The number 9 becomes the next digit in our result. 
Result so far: 83618.8329
If we subtract 4311 from 4720, we get 409.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4090, and continue the process.

Step 13:
479 can be fit into 4090 8 times, resulting in a remainder of 258.
Use 8 as the next digit of our solution. 
Result so far: 83618.83298
Subtract 3832 from 4090 to get 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Step 14:
479 can be fit into 2580 5 times, resulting in a remainder of 185.
Put 5 as the next digit of the answer. 
Result so far: 83618.832985
If we take 2395 away from 2580, we end up with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Let's proceed to step 15:
479 goes into 1850 3 times with a remainder of 413.
Record the quotient 3 as the next digit in the result. 
Result so far: 83618.8329853
Subtracting 1437 from 1850 leaves us with 413.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4130, and continue the process.

Advancing to step 16:
479 can be fit into 4130 8 times, resulting in a remainder of 298.
Record the quotient 8 as the next digit in the result. 
Result so far: 83618.83298538
Subtract 3832 from 4130 to get 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

The final result is 83618.83298538 with a remainder of 2.98e-07.