We're dividing 13189379 by 521 
Our goal is to divide 13189379 by 521.

Going ahead to step 1:
The number 521 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 521

Going ahead to step 2:
13 divided by 521 is 0 with a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 13, we get 13.
Take the next digit (1) from the dividend and append it to 13, then repeat: 131 / 521

Going ahead to step 3:
131 divided by 521 is 0 with a remainder of 131.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 131, we end up with 131.
Take the next digit (8) from the dividend and append it to 131, then repeat: 1318 / 521

Step 4:
The number 521 fits into 1318 2 times, leaving a remainder of 276.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 1042 from 1318 to get 276.
Include the next digit (9) from the dividend after 276, then repeat: 2769 / 521

Moving on to step 5:
When dividing 2769 by 521, we get 5 with a remainder of 164.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
Deduct 2605 from 2769 and we're left with 164.
Take the next digit (3) from the dividend and append it to 164, then repeat: 1643 / 521

Moving on to step 6:
The number 521 fits into 1643 3 times, leaving a remainder of 80.
The next digit of our result is 3. 
Result so far: 253.0
Subtract 1563 from 1643 to get 80.
Fetch the next digit (7) from the dividend, attach it to 80 and continue: 807 / 521

Advancing to step 7:
807 divided by 521 is 1 with a remainder of 286.
Put 1 as the next digit of the answer. 
Result so far: 2531.0
If we take 521 away from 807, we end up with 286.
Bring next digit (9) of the dividend behind the 286 and repeat the process: 2869 / 521

Advancing to step 8:
2869 divided by 521 is 5 with a remainder of 264.
Use 5 as the next digit of our solution. 
Result so far: 25315.0
If we take 2605 away from 2869, we end up with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Let's proceed to step 9:
If we divide 2640 by 521, we get 5 and a remainder of 35.
The next digit of our result is 5. 
Result so far: 25315.5
If we take 2605 away from 2640, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 10:
The number 521 fits into 350 0 times, leaving a remainder of 350.
Use 0 as the next digit of our solution. 
Result so far: 25315.5
If we subtract 0 from 350, we get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

On to step 11:
521 can be fit into 3500 6 times, resulting in a remainder of 374.
Use 6 as the next digit of our solution. 
Result so far: 25315.506
The remainder is 374 after subtracting 3126 from 3500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3740, and continue the process.

Advancing to step 12:
521 goes into 3740 7 times with a remainder of 93.
Record the quotient 7 as the next digit in the result. 
Result so far: 25315.5067
If we take 3647 away from 3740, we end up with 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Moving on to step 13:
If we divide 930 by 521, we get 1 and a remainder of 409.
Write down 1 as next digit of the result. 
Result so far: 25315.50671
Subtract 521 from 930 to 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.

Moving on to step 14:
If we divide 4090 by 521, we get 7 and a remainder of 443.
Record the quotient 7 as the next digit in the result. 
Result so far: 25315.506717
Subtract 3647 from 4090 to get 443.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4430, and continue the process.

Going ahead to step 15:
521 goes into 4430 8 times with a remainder of 262.
Record the quotient 8 as the next digit in the result. 
Result so far: 25315.5067178
Deduct 4168 from 4430 and we're left with 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

Advancing to step 16:
521 goes into 2620 5 times with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 25315.50671785
Subtracting 2605 from 2620 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Our division results in 25315.50671785 with a remaining 1.5e-08.