We look at the division of 80537309 by 801 
Our goal is to divide 80537309 by 801.

On to step 1:
The number 801 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 801

Moving on to step 2:
801 can be fit into 80 0 times, resulting in a remainder of 80.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 80, we get 80.
Take the next digit (5) from the dividend and append it to 80, then repeat: 805 / 801

Step 3:
When dividing 805 by 801, we get 1 with a remainder of 4.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 4 after subtracting 801 from 805.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 801

Advancing to step 4:
When dividing 43 by 801, we get 0 with a remainder of 43.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Deduct 0 from 43 and we're left with 43.
Bring next digit (7) of the dividend behind the 43 and repeat the process: 437 / 801

Step 5:
The number 801 fits into 437 0 times, leaving a remainder of 437.
Record the quotient 0 as the next digit in the result. 
Result so far: 100.0
If we take 0 away from 437, we end up with 437.
Bring next digit (3) of the dividend behind the 437 and repeat the process: 4373 / 801

Advancing to step 6:
When dividing 4373 by 801, we get 5 with a remainder of 368.
Record the quotient 5 as the next digit in the result. 
Result so far: 1005.0
Deduct 4005 from 4373 and we're left with 368.
Fetch the next digit (0) from the dividend, attach it to 368 and continue: 3680 / 801

Advancing to step 7:
When dividing 3680 by 801, we get 4 with a remainder of 476.
The next digit of our result is 4. 
Result so far: 10054.0
Deduct 3204 from 3680 and we're left with 476.
Take the next digit (9) from the dividend and append it to 476, then repeat: 4769 / 801

On to step 8:
801 goes into 4769 5 times with a remainder of 764.
Use 5 as the next digit of our solution. 
Result so far: 100545.0
Deduct 4005 from 4769 and we're left with 764.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7640, and continue the process.

Let's proceed to step 9:
801 can be fit into 7640 9 times, resulting in a remainder of 431.
The number 9 becomes the next digit in our result. 
Result so far: 100545.9
If we take 7209 away from 7640, we end up with 431.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4310, and continue the process.

Advancing to step 10:
The number 801 fits into 4310 5 times, leaving a remainder of 305.
Write down 5 as next digit of the result. 
Result so far: 100545.95
The remainder is 305 after subtracting 4005 from 4310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Let's proceed to step 11:
If we divide 3050 by 801, we get 3 and a remainder of 647.
Record the quotient 3 as the next digit in the result. 
Result so far: 100545.953
The remainder is 647 after subtracting 2403 from 3050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6470, and continue the process.

Advancing to step 12:
The number 801 fits into 6470 8 times, leaving a remainder of 62.
Write down 8 as next digit of the result. 
Result so far: 100545.9538
Subtracting 6408 from 6470 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 13:
When dividing 620 by 801, we get 0 with a remainder of 620.
Put 0 as the next digit of the answer. 
Result so far: 100545.9538
If we subtract 0 from 620, we get 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

On to step 14:
When dividing 6200 by 801, we get 7 with a remainder of 593.
Use 7 as the next digit of our solution. 
Result so far: 100545.953807
Deduct 5607 from 6200 and we're left with 593.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5930, and continue the process.

Advancing to step 15:
5930 divided by 801 is 7 with a remainder of 323.
Use 7 as the next digit of our solution. 
Result so far: 100545.9538077
If we subtract 5607 from 5930, we get 323.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3230, and continue the process.

After the division, we end up with 100545.9538077 and a remainder of 3.23e-06.