We look at the division of 40379121 by 802 
Our goal is to divide 40379121 by 802.

Advancing to step 1:
If we divide 4 by 802, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 802

Going ahead to step 2:
40 divided by 802 is 0 with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 40 to get 40.
Take the next digit (3) from the dividend and append it to 40, then repeat: 403 / 802

Going ahead to step 3:
802 can be fit into 403 0 times, resulting in a remainder of 403.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 403 leaves us with 403.
Bring next digit (7) of the dividend behind the 403 and repeat the process: 4037 / 802

On to step 4:
When dividing 4037 by 802, we get 5 with a remainder of 27.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 4010 from 4037 leaves us with 27.
Append the next digit (9) from the dividend to 27 and continue with: 279 / 802

Step 5:
When dividing 279 by 802, we get 0 with a remainder of 279.
The number 0 becomes the next digit in our result. 
Result so far: 50.0
If we take 0 away from 279, we end up with 279.
Take the next digit (1) from the dividend and append it to 279, then repeat: 2791 / 802

Moving on to step 6:
If we divide 2791 by 802, we get 3 and a remainder of 385.
Use 3 as the next digit of our solution. 
Result so far: 503.0
Deduct 2406 from 2791 and we're left with 385.
Take the next digit (2) from the dividend and append it to 385, then repeat: 3852 / 802

On to step 7:
802 can be fit into 3852 4 times, resulting in a remainder of 644.
The next digit of our result is 4. 
Result so far: 5034.0
If we take 3208 away from 3852, we end up with 644.
Include the next digit (1) from the dividend after 644, then repeat: 6441 / 802

Step 8:
802 can be fit into 6441 8 times, resulting in a remainder of 25.
Write down 8 as next digit of the result. 
Result so far: 50348.0
Subtracting 6416 from 6441 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 9:
250 divided by 802 is 0 with a remainder of 250.
The next digit of our result is 0. 
Result so far: 50348.0
Subtracting 0 from 250 leaves us with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Advancing to step 10:
If we divide 2500 by 802, we get 3 and a remainder of 94.
The number 3 becomes the next digit in our result. 
Result so far: 50348.03
If we subtract 2406 from 2500, we get 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Going ahead to step 11:
940 divided by 802 is 1 with a remainder of 138.
The next digit of our result is 1. 
Result so far: 50348.031
If we take 802 away from 940, we end up with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Let's proceed to step 12:
If we divide 1380 by 802, we get 1 and a remainder of 578.
Put 1 as the next digit of the answer. 
Result so far: 50348.0311
Subtract 802 from 1380 to get 578.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5780, and continue the process.

The final outcome is 50348.0311, with a leftover of 0.00578.