64920690 ÷ 79 
We're looking to find how many times 79 goes into 64920690.

Advancing to step 1:
6 divided by 79 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 79

On to step 2:
79 goes into 64 0 times with a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Include the next digit (9) from the dividend after 64, then repeat: 649 / 79

Advancing to step 3:
649 divided by 79 is 8 with a remainder of 17.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtract 632 from 649 to get 17.
Take the next digit (2) from the dividend and append it to 17, then repeat: 172 / 79

Advancing to step 4:
79 goes into 172 2 times with a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 82.0
The remainder is 14 after subtracting 158 from 172.
Grab the next digit (0) from the dividend, add it to 14, then carry on: 140 / 79

Going ahead to step 5:
The number 79 fits into 140 1 times, leaving a remainder of 61.
Record the quotient 1 as the next digit in the result. 
Result so far: 821.0
Subtract 79 from 140 to get 61.
Take the next digit (6) from the dividend and append it to 61, then repeat: 616 / 79

Going ahead to step 6:
If we divide 616 by 79, we get 7 and a remainder of 63.
The next digit of our result is 7. 
Result so far: 8217.0
Subtract 553 from 616 to get 63.
Take the next digit (9) from the dividend and append it to 63, then repeat: 639 / 79

Step 7:
79 can be fit into 639 8 times, resulting in a remainder of 7.
The next digit of our result is 8. 
Result so far: 82178.0
Deduct 632 from 639 and we're left with 7.
Take the next digit (0) from the dividend and append it to 7, then repeat: 70 / 79

Moving on to step 8:
70 divided by 79 is 0 with a remainder of 70.
Use 0 as the next digit of our solution. 
Result so far: 821780.0
Subtract 0 from 70 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 9:
79 goes into 700 8 times with a remainder of 68.
Record the quotient 8 as the next digit in the result. 
Result so far: 821780.8
The remainder is 68 after subtracting 632 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Let's proceed to step 10:
680 divided by 79 is 8 with a remainder of 48.
Use 8 as the next digit of our solution. 
Result so far: 821780.88
Subtract 632 from 680 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final result is 821780.88 with a remainder of 0.048.