Let's divide 91878455 by 13
We want to figure out the number of times 91878455 can be divided by 13.

On to step 1:
If we divide 9 by 13, we get 0 and a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 13

Going ahead to step 2:
The number 13 fits into 91 7 times, leaving a remainder of 0.
The next digit of our result is 7. 
Result so far: 7.0
Subtract 91 from 91 to get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 13

Going ahead to step 3:
When dividing 8 by 13, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 70.0
Subtract 0 from 8 to get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 13

Advancing to step 4:
13 goes into 87 6 times with a remainder of 9.
The next digit of our result is 6. 
Result so far: 706.0
Subtract 78 from 87 to get 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 13

Moving on to step 5:
98 divided by 13 is 7 with a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 7067.0
Subtracting 91 from 98 leaves us with 7.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 13

Going ahead to step 6:
The number 13 fits into 74 5 times, leaving a remainder of 9.
Record the quotient 5 as the next digit in the result. 
Result so far: 70675.0
If we take 65 away from 74, we end up with 9.
Include the next digit (5) from the dividend after 9, then repeat: 95 / 13

Let's proceed to step 7:
13 goes into 95 7 times with a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 706757.0
Subtract 91 from 95 to get 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 13

Step 8:
45 divided by 13 is 3 with a remainder of 6.
The next digit of our result is 3. 
Result so far: 7067573.0
The remainder is 6 after subtracting 39 from 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 9:
The number 13 fits into 60 4 times, leaving a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 7067573.4
If we take 52 away from 60, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 10:
13 can be fit into 80 6 times, resulting in a remainder of 2.
The next digit of our result is 6. 
Result so far: 7067573.46
Subtracting 78 from 80 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 11:
13 goes into 20 1 times with a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 7067573.461
Deduct 13 from 20 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 12:
70 divided by 13 is 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 7067573.4615
If we take 65 away from 70, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 13:
When dividing 50 by 13, we get 3 with a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 7067573.46153
Subtracting 39 from 50 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 14:
The number 13 fits into 110 8 times, leaving a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 7067573.461538
The remainder is 6 after subtracting 104 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 15:
13 goes into 60 4 times with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 7067573.4615384
Deduct 52 from 60 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 16:
The number 13 fits into 80 6 times, leaving a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 7067573.46153846
If we take 78 away from 80, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Our division results in 7067573.46153846 with a remaining 2e-09.