Let's divide 66147991 by 978
We're looking to find how many times 978 goes into 66147991.

On to step 1:
978 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 978

Step 2:
When dividing 66 by 978, we get 0 with a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Take the next digit (1) from the dividend and append it to 66, then repeat: 661 / 978

Moving on to step 3:
If we divide 661 by 978, we get 0 and a remainder of 661.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 661 leaves us with 661.
Append the next digit (4) from the dividend to 661 and continue with: 6614 / 978

Step 4:
When dividing 6614 by 978, we get 6 with a remainder of 746.
The next digit of our result is 6. 
Result so far: 6.0
If we take 5868 away from 6614, we end up with 746.
Append the next digit (7) from the dividend to 746 and continue with: 7467 / 978

Advancing to step 5:
978 can be fit into 7467 7 times, resulting in a remainder of 621.
The number 7 becomes the next digit in our result. 
Result so far: 67.0
Subtracting 6846 from 7467 leaves us with 621.
Grab the next digit (9) from the dividend, add it to 621, then carry on: 6219 / 978

Moving on to step 6:
When dividing 6219 by 978, we get 6 with a remainder of 351.
Put 6 as the next digit of the answer. 
Result so far: 676.0
If we take 5868 away from 6219, we end up with 351.
Bring next digit (9) of the dividend behind the 351 and repeat the process: 3519 / 978

Let's proceed to step 7:
978 goes into 3519 3 times with a remainder of 585.
Put 3 as the next digit of the answer. 
Result so far: 6763.0
Deduct 2934 from 3519 and we're left with 585.
Include the next digit (1) from the dividend after 585, then repeat: 5851 / 978

Advancing to step 8:
When dividing 5851 by 978, we get 5 with a remainder of 961.
The next digit of our result is 5. 
Result so far: 67635.0
The remainder is 961 after subtracting 4890 from 5851.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9610, and continue the process.

Advancing to step 9:
9610 divided by 978 is 9 with a remainder of 808.
Put 9 as the next digit of the answer. 
Result so far: 67635.9
Subtract 8802 from 9610 to get 808.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8080, and continue the process.

Going ahead to step 10:
8080 divided by 978 is 8 with a remainder of 256.
The number 8 becomes the next digit in our result. 
Result so far: 67635.98
Subtract 7824 from 8080 to get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Moving on to step 11:
The number 978 fits into 2560 2 times, leaving a remainder of 604.
Write down 2 as next digit of the result. 
Result so far: 67635.982
Subtracting 1956 from 2560 leaves us with 604.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6040, and continue the process.

Going ahead to step 12:
6040 divided by 978 is 6 with a remainder of 172.
The next digit of our result is 6. 
Result so far: 67635.9826
If we take 5868 away from 6040, we end up with 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Moving on to step 13:
If we divide 1720 by 978, we get 1 and a remainder of 742.
The next digit of our result is 1. 
Result so far: 67635.98261
If we take 978 away from 1720, we end up with 742.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7420, and continue the process.

Going ahead to step 14:
The number 978 fits into 7420 7 times, leaving a remainder of 574.
Record the quotient 7 as the next digit in the result. 
Result so far: 67635.982617
If we subtract 6846 from 7420, we get 574.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5740, and continue the process.

Let's proceed to step 15:
978 goes into 5740 5 times with a remainder of 850.
Record the quotient 5 as the next digit in the result. 
Result so far: 67635.9826175
Subtracting 4890 from 5740 leaves us with 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8500, and continue the process.

Moving on to step 16:
The number 978 fits into 8500 8 times, leaving a remainder of 676.
Record the quotient 8 as the next digit in the result. 
Result so far: 67635.98261758
Subtracting 7824 from 8500 leaves us with 676.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6760, and continue the process.

Our division results in 67635.98261758 with a remaining 6.76e-07.