We're dividing 77120091 by 715 
We want to divide 77120091 by 715.

Moving on to step 1:
If we divide 7 by 715, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 715

Advancing to step 2:
If we divide 77 by 715, we get 0 and a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 77 leaves us with 77.
Grab the next digit (1) from the dividend, add it to 77, then carry on: 771 / 715

Step 3:
The number 715 fits into 771 1 times, leaving a remainder of 56.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 56 after subtracting 715 from 771.
Grab the next digit (2) from the dividend, add it to 56, then carry on: 562 / 715

Step 4:
If we divide 562 by 715, we get 0 and a remainder of 562.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 562, we end up with 562.
Grab the next digit (0) from the dividend, add it to 562, then carry on: 5620 / 715

Let's proceed to step 5:
When dividing 5620 by 715, we get 7 with a remainder of 615.
Put 7 as the next digit of the answer. 
Result so far: 107.0
Subtract 5005 from 5620 to get 615.
Grab the next digit (0) from the dividend, add it to 615, then carry on: 6150 / 715

Step 6:
If we divide 6150 by 715, we get 8 and a remainder of 430.
Write down 8 as next digit of the result. 
Result so far: 1078.0
Subtract 5720 from 6150 to get 430.
Grab the next digit (9) from the dividend, add it to 430, then carry on: 4309 / 715

On to step 7:
4309 divided by 715 is 6 with a remainder of 19.
Record the quotient 6 as the next digit in the result. 
Result so far: 10786.0
The remainder is 19 after subtracting 4290 from 4309.
Bring next digit (1) of the dividend behind the 19 and repeat the process: 191 / 715

Let's proceed to step 8:
191 divided by 715 is 0 with a remainder of 191.
The number 0 becomes the next digit in our result. 
Result so far: 107860.0
Deduct 0 from 191 and we're left with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Step 9:
1910 divided by 715 is 2 with a remainder of 480.
Record the quotient 2 as the next digit in the result. 
Result so far: 107860.2
Subtract 1430 from 1910 to get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

On to step 10:
4800 divided by 715 is 6 with a remainder of 510.
Record the quotient 6 as the next digit in the result. 
Result so far: 107860.26
Deduct 4290 from 4800 and we're left with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Let's proceed to step 11:
The number 715 fits into 5100 7 times, leaving a remainder of 95.
The number 7 becomes the next digit in our result. 
Result so far: 107860.267
If we take 5005 away from 5100, we end up with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Advancing to step 12:
715 can be fit into 950 1 times, resulting in a remainder of 235.
The next digit of our result is 1. 
Result so far: 107860.2671
The remainder is 235 after subtracting 715 from 950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Going ahead to step 13:
When dividing 2350 by 715, we get 3 with a remainder of 205.
Put 3 as the next digit of the answer. 
Result so far: 107860.26713
If we subtract 2145 from 2350, we get 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Advancing to step 14:
The number 715 fits into 2050 2 times, leaving a remainder of 620.
Put 2 as the next digit of the answer. 
Result so far: 107860.267132
If we subtract 1430 from 2050, we get 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

On to step 15:
If we divide 6200 by 715, we get 8 and a remainder of 480.
Record the quotient 8 as the next digit in the result. 
Result so far: 107860.2671328
The remainder is 480 after subtracting 5720 from 6200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Step 16:
4800 divided by 715 is 6 with a remainder of 510.
Use 6 as the next digit of our solution. 
Result so far: 107860.26713286
Subtract 4290 from 4800 to get 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

The final result is 107860.26713286 with a remainder of 5.1e-07.