77402520 divided by 308 
We want to figure out the number of times 77402520 can be divided by 308.

Advancing to step 1:
7 divided by 308 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 308

Advancing to step 2:
308 goes into 77 0 times with a remainder of 77.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 77 to get 77.
Grab the next digit (4) from the dividend, add it to 77, then carry on: 774 / 308

Advancing to step 3:
The number 308 fits into 774 2 times, leaving a remainder of 158.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 616 from 774 leaves us with 158.
Grab the next digit (0) from the dividend, add it to 158, then carry on: 1580 / 308

Moving on to step 4:
308 goes into 1580 5 times with a remainder of 40.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
If we take 1540 away from 1580, we end up with 40.
Append the next digit (2) from the dividend to 40 and continue with: 402 / 308

Moving on to step 5:
402 divided by 308 is 1 with a remainder of 94.
Use 1 as the next digit of our solution. 
Result so far: 251.0
If we take 308 away from 402, we end up with 94.
Bring next digit (5) of the dividend behind the 94 and repeat the process: 945 / 308

On to step 6:
945 divided by 308 is 3 with a remainder of 21.
Record the quotient 3 as the next digit in the result. 
Result so far: 2513.0
If we subtract 924 from 945, we get 21.
Take the next digit (2) from the dividend and append it to 21, then repeat: 212 / 308

On to step 7:
308 can be fit into 212 0 times, resulting in a remainder of 212.
Record the quotient 0 as the next digit in the result. 
Result so far: 25130.0
If we subtract 0 from 212, we get 212.
Append the next digit (0) from the dividend to 212 and continue with: 2120 / 308

Advancing to step 8:
2120 divided by 308 is 6 with a remainder of 272.
Record the quotient 6 as the next digit in the result. 
Result so far: 251306.0
If we subtract 1848 from 2120, we get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Moving on to step 9:
308 goes into 2720 8 times with a remainder of 256.
Write down 8 as next digit of the result. 
Result so far: 251306.8
If we subtract 2464 from 2720, we get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

On to step 10:
2560 divided by 308 is 8 with a remainder of 96.
Put 8 as the next digit of the answer. 
Result so far: 251306.88
Subtract 2464 from 2560 to get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

The final outcome is 251306.88, with a leftover of 0.096.