We look at the division of 904102 by 77 
We want to figure out the number of times 904102 can be divided by 77.

Going ahead to step 1:
When dividing 9 by 77, we get 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 77

Step 2:
77 can be fit into 90 1 times, resulting in a remainder of 13.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 13 after subtracting 77 from 90.
Bring next digit (4) of the dividend behind the 13 and repeat the process: 134 / 77

Going ahead to step 3:
134 divided by 77 is 1 with a remainder of 57.
Put 1 as the next digit of the answer. 
Result so far: 11.0
If we subtract 77 from 134, we get 57.
Grab the next digit (1) from the dividend, add it to 57, then carry on: 571 / 77

On to step 4:
77 can be fit into 571 7 times, resulting in a remainder of 32.
Write down 7 as next digit of the result. 
Result so far: 117.0
Subtracting 539 from 571 leaves us with 32.
Include the next digit (0) from the dividend after 32, then repeat: 320 / 77

Advancing to step 5:
If we divide 320 by 77, we get 4 and a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 1174.0
If we subtract 308 from 320, we get 12.
Take the next digit (2) from the dividend and append it to 12, then repeat: 122 / 77

Advancing to step 6:
77 goes into 122 1 times with a remainder of 45.
Write down 1 as next digit of the result. 
Result so far: 11741.0
Subtract 77 from 122 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 7:
450 divided by 77 is 5 with a remainder of 65.
Record the quotient 5 as the next digit in the result. 
Result so far: 11741.5
If we subtract 385 from 450, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 8:
77 goes into 650 8 times with a remainder of 34.
Put 8 as the next digit of the answer. 
Result so far: 11741.58
Subtracting 616 from 650 leaves us 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.

Going ahead to step 9:
If we divide 340 by 77, we get 4 and a remainder of 32.
Record the quotient 4 as the next digit in the result. 
Result so far: 11741.584
The remainder is 32 after subtracting 308 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 10:
The number 77 fits into 320 4 times, leaving a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 11741.5844
Subtract 308 from 320 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 11741.5844 and a remainder of 0.00012.