45764686 ÷ 78 
We want to figure out the number of times 45764686 can be divided by 78.

On to step 1:
If we divide 4 by 78, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 78

Step 2:
78 can be fit into 45 0 times, resulting in a remainder of 45.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 45, we end up with 45.
Fetch the next digit (7) from the dividend, attach it to 45 and continue: 457 / 78

Advancing to step 3:
457 divided by 78 is 5 with a remainder of 67.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we take 390 away from 457, we end up with 67.
Fetch the next digit (6) from the dividend, attach it to 67 and continue: 676 / 78

On to step 4:
The number 78 fits into 676 8 times, leaving a remainder of 52.
Write down 8 as next digit of the result. 
Result so far: 58.0
The remainder is 52 after subtracting 624 from 676.
Append the next digit (4) from the dividend to 52 and continue with: 524 / 78

Advancing to step 5:
If we divide 524 by 78, we get 6 and a remainder of 56.
The number 6 becomes the next digit in our result. 
Result so far: 586.0
The remainder is 56 after subtracting 468 from 524.
Fetch the next digit (6) from the dividend, attach it to 56 and continue: 566 / 78

On to step 6:
If we divide 566 by 78, we get 7 and a remainder of 20.
The next digit of our result is 7. 
Result so far: 5867.0
If we take 546 away from 566, we end up with 20.
Grab the next digit (8) from the dividend, add it to 20, then carry on: 208 / 78

On to step 7:
The number 78 fits into 208 2 times, leaving a remainder of 52.
The number 2 becomes the next digit in our result. 
Result so far: 58672.0
If we subtract 156 from 208, we get 52.
Bring next digit (6) of the dividend behind the 52 and repeat the process: 526 / 78

Going ahead to step 8:
When dividing 526 by 78, we get 6 with a remainder of 58.
The next digit of our result is 6. 
Result so far: 586726.0
The remainder is 58 after subtracting 468 from 526.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 9:
The number 78 fits into 580 7 times, leaving a remainder of 34.
Write down 7 as next digit of the result. 
Result so far: 586726.7
If we subtract 546 from 580, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 10:
78 goes into 340 4 times with a remainder of 28.
The number 4 becomes the next digit in our result. 
Result so far: 586726.74
The remainder is 28 after subtracting 312 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 11:
280 divided by 78 is 3 with a remainder of 46.
Put 3 as the next digit of the answer. 
Result so far: 586726.743
Subtract 234 from 280 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 12:
When dividing 460 by 78, we get 5 with a remainder of 70.
The next digit of our result is 5. 
Result so far: 586726.7435
Subtracting 390 from 460 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 13:
The number 78 fits into 700 8 times, leaving a remainder of 76.
Put 8 as the next digit of the answer. 
Result so far: 586726.74358
If we subtract 624 from 700, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 14:
The number 78 fits into 760 9 times, leaving a remainder of 58.
The next digit of our result is 9. 
Result so far: 586726.743589
Subtract 702 from 760 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 15:
The number 78 fits into 580 7 times, leaving a remainder of 34.
Put 7 as the next digit of the answer. 
Result so far: 586726.7435897
Deduct 546 from 580 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 16:
78 can be fit into 340 4 times, resulting in a remainder of 28.
Use 4 as the next digit of our solution. 
Result so far: 586726.74358974
The remainder is 28 after subtracting 312 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

After the division, we end up with 586726.74358974 and a remainder of 2.8e-08.