Let's divide 66420654 by 788
Our goal is to divide 66420654 by 788.

Going ahead to step 1:
788 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 788

Going ahead to step 2:
788 can be fit into 66 0 times, resulting in a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Bring next digit (4) of the dividend behind the 66 and repeat the process: 664 / 788

Advancing to step 3:
When dividing 664 by 788, we get 0 with a remainder of 664.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 664 after subtracting 0 from 664.
Take the next digit (2) from the dividend and append it to 664, then repeat: 6642 / 788

Advancing to step 4:
788 can be fit into 6642 8 times, resulting in a remainder of 338.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtract 6304 from 6642 to get 338.
Take the next digit (0) from the dividend and append it to 338, then repeat: 3380 / 788

On to step 5:
The number 788 fits into 3380 4 times, leaving a remainder of 228.
Use 4 as the next digit of our solution. 
Result so far: 84.0
If we take 3152 away from 3380, we end up with 228.
Take the next digit (6) from the dividend and append it to 228, then repeat: 2286 / 788

Moving on to step 6:
788 goes into 2286 2 times with a remainder of 710.
The next digit of our result is 2. 
Result so far: 842.0
Deduct 1576 from 2286 and we're left with 710.
Fetch the next digit (5) from the dividend, attach it to 710 and continue: 7105 / 788

Advancing to step 7:
The number 788 fits into 7105 9 times, leaving a remainder of 13.
The next digit of our result is 9. 
Result so far: 8429.0
Subtracting 7092 from 7105 leaves us with 13.
Grab the next digit (4) from the dividend, add it to 13, then carry on: 134 / 788

Going ahead to step 8:
788 goes into 134 0 times with a remainder of 134.
The next digit of our result is 0. 
Result so far: 84290.0
Subtracting 0 from 134 leaves us with 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Moving on to step 9:
The number 788 fits into 1340 1 times, leaving a remainder of 552.
The next digit of our result is 1. 
Result so far: 84290.1
Subtract 788 from 1340 to get 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Advancing to step 10:
If we divide 5520 by 788, we get 7 and a remainder of 4.
The next digit of our result is 7. 
Result so far: 84290.17
Deduct 5516 from 5520 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 11:
788 goes into 40 0 times with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 84290.17
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 12:
The number 788 fits into 400 0 times, leaving a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 84290.17
If we subtract 0 from 400, we get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

The final result is 84290.17 with a remainder of 0.004.