Let's divide 78478847 by 312
We're looking to find how many times 312 goes into 78478847.

On to step 1:
7 divided by 312 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 312

Moving on to step 2:
312 can be fit into 78 0 times, resulting in a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Append the next digit (4) from the dividend to 78 and continue with: 784 / 312

Advancing to step 3:
312 goes into 784 2 times with a remainder of 160.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 624 from 784 and we're left with 160.
Grab the next digit (7) from the dividend, add it to 160, then carry on: 1607 / 312

Step 4:
312 goes into 1607 5 times with a remainder of 47.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
Deduct 1560 from 1607 and we're left with 47.
Include the next digit (8) from the dividend after 47, then repeat: 478 / 312

Going ahead to step 5:
312 can be fit into 478 1 times, resulting in a remainder of 166.
Write down 1 as next digit of the result. 
Result so far: 251.0
Subtract 312 from 478 to get 166.
Append the next digit (8) from the dividend to 166 and continue with: 1668 / 312

Moving on to step 6:
The number 312 fits into 1668 5 times, leaving a remainder of 108.
Put 5 as the next digit of the answer. 
Result so far: 2515.0
If we subtract 1560 from 1668, we get 108.
Append the next digit (4) from the dividend to 108 and continue with: 1084 / 312

Let's proceed to step 7:
1084 divided by 312 is 3 with a remainder of 148.
Record the quotient 3 as the next digit in the result. 
Result so far: 25153.0
The remainder is 148 after subtracting 936 from 1084.
Bring next digit (7) of the dividend behind the 148 and repeat the process: 1487 / 312

On to step 8:
If we divide 1487 by 312, we get 4 and a remainder of 239.
The number 4 becomes the next digit in our result. 
Result so far: 251534.0
If we take 1248 away from 1487, we end up with 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

On to step 9:
If we divide 2390 by 312, we get 7 and a remainder of 206.
Record the quotient 7 as the next digit in the result. 
Result so far: 251534.7
If we subtract 2184 from 2390, we get 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Going ahead to step 10:
When dividing 2060 by 312, we get 6 with a remainder of 188.
Write down 6 as next digit of the result. 
Result so far: 251534.76
If we take 1872 away from 2060, we end up with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

On to step 11:
The number 312 fits into 1880 6 times, leaving a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 251534.766
The remainder is 8 after subtracting 1872 from 1880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 251534.766 and a remainder of 0.0008.