We're dividing 78188108 by 12 
Let's see how many times 12 fits into 78188108.

Going ahead to step 1:
The number 12 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 12

Going ahead to step 2:
12 can be fit into 78 6 times, resulting in a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 72 from 78, we get 6.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 12

Advancing to step 3:
12 can be fit into 61 5 times, resulting in a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 65.0
Deduct 60 from 61 and we're left with 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 12

On to step 4:
When dividing 18 by 12, we get 1 with a remainder of 6.
Use 1 as the next digit of our solution. 
Result so far: 651.0
The remainder is 6 after subtracting 12 from 18.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 12

Let's proceed to step 5:
The number 12 fits into 68 5 times, leaving a remainder of 8.
The number 5 becomes the next digit in our result. 
Result so far: 6515.0
If we take 60 away from 68, we end up with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 12

Advancing to step 6:
The number 12 fits into 81 6 times, leaving a remainder of 9.
Record the quotient 6 as the next digit in the result. 
Result so far: 65156.0
If we take 72 away from 81, we end up with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 12

Moving on to step 7:
12 goes into 90 7 times with a remainder of 6.
Use 7 as the next digit of our solution. 
Result so far: 651567.0
If we subtract 84 from 90, we get 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 12

On to step 8:
When dividing 68 by 12, we get 5 with a remainder of 8.
The number 5 becomes the next digit in our result. 
Result so far: 6515675.0
Subtract 60 from 68 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 9:
12 goes into 80 6 times with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 6515675.6
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
When dividing 80 by 12, we get 6 with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 6515675.66
Deduct 72 from 80 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.

The quotient of the division is 6515675.66, and the remainder is 0.008.