Let's divide 78850407 by 790
We're looking to find how many times 790 goes into 78850407.

On to step 1:
7 divided by 790 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.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 790

Let's proceed to step 2:
78 divided by 790 is 0 with a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Grab the next digit (8) from the dividend, add it to 78, then carry on: 788 / 790

Moving on to step 3:
If we divide 788 by 790, we get 0 and a remainder of 788.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 788, we get 788.
Take the next digit (5) from the dividend and append it to 788, then repeat: 7885 / 790

Advancing to step 4:
When dividing 7885 by 790, we get 9 with a remainder of 775.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we take 7110 away from 7885, we end up with 775.
Bring next digit (0) of the dividend behind the 775 and repeat the process: 7750 / 790

On to step 5:
790 goes into 7750 9 times with a remainder of 640.
Write down 9 as next digit of the result. 
Result so far: 99.0
Subtract 7110 from 7750 to get 640.
Append the next digit (4) from the dividend to 640 and continue with: 6404 / 790

Moving on to step 6:
If we divide 6404 by 790, we get 8 and a remainder of 84.
The next digit of our result is 8. 
Result so far: 998.0
The remainder is 84 after subtracting 6320 from 6404.
Fetch the next digit (0) from the dividend, attach it to 84 and continue: 840 / 790

Going ahead to step 7:
840 divided by 790 is 1 with a remainder of 50.
Record the quotient 1 as the next digit in the result. 
Result so far: 9981.0
Deduct 790 from 840 and we're left with 50.
Include the next digit (7) from the dividend after 50, then repeat: 507 / 790

Going ahead to step 8:
The number 790 fits into 507 0 times, leaving a remainder of 507.
The number 0 becomes the next digit in our result. 
Result so far: 99810.0
Subtract 0 from 507 to get 507.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5070, and continue the process.

On to step 9:
The number 790 fits into 5070 6 times, leaving a remainder of 330.
Record the quotient 6 as the next digit in the result. 
Result so far: 99810.6
If we subtract 4740 from 5070, we get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Advancing to step 10:
3300 divided by 790 is 4 with a remainder of 140.
The number 4 becomes the next digit in our result. 
Result so far: 99810.64
Deduct 3160 from 3300 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Advancing to step 11:
The number 790 fits into 1400 1 times, leaving a remainder of 610.
The number 1 becomes the next digit in our result. 
Result so far: 99810.641
Subtract 790 from 1400 to get 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

Advancing to step 12:
790 goes into 6100 7 times with a remainder of 570.
Put 7 as the next digit of the answer. 
Result so far: 99810.6417
Subtract 5530 from 6100 to get 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Advancing to step 13:
The number 790 fits into 5700 7 times, leaving a remainder of 170.
Put 7 as the next digit of the answer. 
Result so far: 99810.64177
Deduct 5530 from 5700 and we're left with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

The final outcome is 99810.64177, with a leftover of 0.00017.