78452963 ÷ 660 
Let's see how many times 660 fits into 78452963.

On to step 1:
7 divided by 660 is 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 660

Advancing to step 2:
660 goes into 78 0 times with a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 78 after subtracting 0 from 78.
Bring next digit (4) of the dividend behind the 78 and repeat the process: 784 / 660

Moving on to step 3:
The number 660 fits into 784 1 times, leaving a remainder of 124.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 660 from 784 to get 124.
Bring next digit (5) of the dividend behind the 124 and repeat the process: 1245 / 660

On to step 4:
If we divide 1245 by 660, we get 1 and a remainder of 585.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtracting 660 from 1245 leaves us with 585.
Bring next digit (2) of the dividend behind the 585 and repeat the process: 5852 / 660

Advancing to step 5:
660 goes into 5852 8 times with a remainder of 572.
Put 8 as the next digit of the answer. 
Result so far: 118.0
Subtract 5280 from 5852 to get 572.
Include the next digit (9) from the dividend after 572, then repeat: 5729 / 660

Step 6:
660 goes into 5729 8 times with a remainder of 449.
Record the quotient 8 as the next digit in the result. 
Result so far: 1188.0
Subtracting 5280 from 5729 leaves us with 449.
Append the next digit (6) from the dividend to 449 and continue with: 4496 / 660

Advancing to step 7:
When dividing 4496 by 660, we get 6 with a remainder of 536.
Use 6 as the next digit of our solution. 
Result so far: 11886.0
Deduct 3960 from 4496 and we're left with 536.
Grab the next digit (3) from the dividend, add it to 536, then carry on: 5363 / 660

Let's proceed to step 8:
5363 divided by 660 is 8 with a remainder of 83.
Record the quotient 8 as the next digit in the result. 
Result so far: 118868.0
If we take 5280 away from 5363, we end up with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

On to step 9:
When dividing 830 by 660, we get 1 with a remainder of 170.
The number 1 becomes the next digit in our result. 
Result so far: 118868.1
Subtract 660 from 830 to get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Going ahead to step 10:
660 can be fit into 1700 2 times, resulting in a remainder of 380.
The number 2 becomes the next digit in our result. 
Result so far: 118868.12
Deduct 1320 from 1700 and we're left with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

On to step 11:
660 can be fit into 3800 5 times, resulting in a remainder of 500.
Write down 5 as next digit of the result. 
Result so far: 118868.125
If we subtract 3300 from 3800, we get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Step 12:
If we divide 5000 by 660, we get 7 and a remainder of 380.
The next digit of our result is 7. 
Result so far: 118868.1257
Deduct 4620 from 5000 and we're left with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Let's proceed to step 13:
660 can be fit into 3800 5 times, resulting in a remainder of 500.
Use 5 as the next digit of our solution. 
Result so far: 118868.12575
Subtracting 3300 from 3800 leaves us with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Going ahead to step 14:
The number 660 fits into 5000 7 times, leaving a remainder of 380.
The number 7 becomes the next digit in our result. 
Result so far: 118868.125757
Subtracting 4620 from 5000 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Let's proceed to step 15:
3800 divided by 660 is 5 with a remainder of 500.
The next digit of our result is 5. 
Result so far: 118868.1257575
If we subtract 3300 from 3800, we get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Advancing to step 16:
When dividing 5000 by 660, we get 7 with a remainder of 380.
Use 7 as the next digit of our solution. 
Result so far: 118868.12575757
If we take 4620 away from 5000, we end up with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

The final outcome is 118868.12575757, with a leftover of 3.8e-07.