We're dividing 12636285 by 260 
We want to figure out the number of times 12636285 can be divided by 260.

Step 1:
260 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 260

Step 2:
260 goes into 12 0 times with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Bring next digit (6) of the dividend behind the 12 and repeat the process: 126 / 260

Step 3:
When dividing 126 by 260, we get 0 with a remainder of 126.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 126, we end up with 126.
Take the next digit (3) from the dividend and append it to 126, then repeat: 1263 / 260

Advancing to step 4:
260 can be fit into 1263 4 times, resulting in a remainder of 223.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 1040 away from 1263, we end up with 223.
Fetch the next digit (6) from the dividend, attach it to 223 and continue: 2236 / 260

Advancing to step 5:
The number 260 fits into 2236 8 times, leaving a remainder of 156.
Record the quotient 8 as the next digit in the result. 
Result so far: 48.0
Subtracting 2080 from 2236 leaves us with 156.
Append the next digit (2) from the dividend to 156 and continue with: 1562 / 260

Advancing to step 6:
The number 260 fits into 1562 6 times, leaving a remainder of 2.
The next digit of our result is 6. 
Result so far: 486.0
Deduct 1560 from 1562 and we're left with 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 260

On to step 7:
When dividing 28 by 260, we get 0 with a remainder of 28.
Write down 0 as next digit of the result. 
Result so far: 4860.0
If we subtract 0 from 28, we get 28.
Bring next digit (5) of the dividend behind the 28 and repeat the process: 285 / 260

Let's proceed to step 8:
285 divided by 260 is 1 with a remainder of 25.
Record the quotient 1 as the next digit in the result. 
Result so far: 48601.0
If we subtract 260 from 285, we get 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:
260 can be fit into 250 0 times, resulting in a remainder of 250.
Record the quotient 0 as the next digit in the result. 
Result so far: 48601.0
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.

Going ahead to step 10:
2500 divided by 260 is 9 with a remainder of 160.
Write down 9 as next digit of the result. 
Result so far: 48601.09
If we take 2340 away from 2500, we end up with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 11:
1600 divided by 260 is 6 with a remainder of 40.
Use 6 as the next digit of our solution. 
Result so far: 48601.096
If we take 1560 away from 1600, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 12:
If we divide 400 by 260, we get 1 and a remainder of 140.
Write down 1 as next digit of the result. 
Result so far: 48601.0961
If we take 260 away from 400, we end up with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Step 13:
The number 260 fits into 1400 5 times, leaving a remainder of 100.
Write down 5 as next digit of the result. 
Result so far: 48601.09615
If we subtract 1300 from 1400, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 14:
1000 divided by 260 is 3 with a remainder of 220.
Write down 3 as next digit of the result. 
Result so far: 48601.096153
Deduct 780 from 1000 and we're left with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Advancing to step 15:
260 can be fit into 2200 8 times, resulting in a remainder of 120.
Write down 8 as next digit of the result. 
Result so far: 48601.0961538
If we subtract 2080 from 2200, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 16:
If we divide 1200 by 260, we get 4 and a remainder of 160.
Record the quotient 4 as the next digit in the result. 
Result so far: 48601.09615384
If we take 1040 away from 1200, we end up with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

After the division, we end up with 48601.09615384 and a remainder of 1.6e-07.