We look at the division of 8009301 by 521 
Let's see how many times 521 fits into 8009301.

Advancing to step 1:
The number 521 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 521

Step 2:
521 can be fit into 80 0 times, resulting in a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 80 to get 80.
Grab the next digit (0) from the dividend, add it to 80, then carry on: 800 / 521

Advancing to step 3:
521 goes into 800 1 times with a remainder of 279.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 521 from 800 leaves us with 279.
Fetch the next digit (9) from the dividend, attach it to 279 and continue: 2799 / 521

Step 4:
The number 521 fits into 2799 5 times, leaving a remainder of 194.
Write down 5 as next digit of the result. 
Result so far: 15.0
Deduct 2605 from 2799 and we're left with 194.
Bring next digit (3) of the dividend behind the 194 and repeat the process: 1943 / 521

Step 5:
When dividing 1943 by 521, we get 3 with a remainder of 380.
Write down 3 as next digit of the result. 
Result so far: 153.0
If we subtract 1563 from 1943, we get 380.
Grab the next digit (0) from the dividend, add it to 380, then carry on: 3800 / 521

Advancing to step 6:
521 goes into 3800 7 times with a remainder of 153.
Use 7 as the next digit of our solution. 
Result so far: 1537.0
Subtracting 3647 from 3800 leaves us with 153.
Bring next digit (1) of the dividend behind the 153 and repeat the process: 1531 / 521

Going ahead to step 7:
The number 521 fits into 1531 2 times, leaving a remainder of 489.
The number 2 becomes the next digit in our result. 
Result so far: 15372.0
The remainder is 489 after subtracting 1042 from 1531.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4890, and continue the process.

Advancing to step 8:
521 goes into 4890 9 times with a remainder of 201.
Put 9 as the next digit of the answer. 
Result so far: 15372.9
Subtract 4689 from 4890 to get 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

Advancing to step 9:
If we divide 2010 by 521, we get 3 and a remainder of 447.
Write down 3 as next digit of the result. 
Result so far: 15372.93
If we take 1563 away from 2010, we end up with 447.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4470, and continue the process.

Step 10:
521 goes into 4470 8 times with a remainder of 302.
The number 8 becomes the next digit in our result. 
Result so far: 15372.938
If we subtract 4168 from 4470, we get 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 11:
521 goes into 3020 5 times with a remainder of 415.
Write down 5 as next digit of the result. 
Result so far: 15372.9385
Subtracting 2605 from 3020 leaves us with 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Let's proceed to step 12:
521 can be fit into 4150 7 times, resulting in a remainder of 503.
Use 7 as the next digit of our solution. 
Result so far: 15372.93857
If we subtract 3647 from 4150, we get 503.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5030, and continue the process.

Going ahead to step 13:
The number 521 fits into 5030 9 times, leaving a remainder of 341.
Put 9 as the next digit of the answer. 
Result so far: 15372.938579
Subtract 4689 from 5030 to get 341.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3410, and continue the process.

Advancing to step 14:
521 can be fit into 3410 6 times, resulting in a remainder of 284.
Record the quotient 6 as the next digit in the result. 
Result so far: 15372.9385796
Subtract 3126 from 3410 to get 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

On to step 15:
521 can be fit into 2840 5 times, resulting in a remainder of 235.
Use 5 as the next digit of our solution. 
Result so far: 15372.93857965
Subtracting 2605 from 2840 leaves us with 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

The quotient of the division is 15372.93857965, and the remainder is 2.35e-07.