We're dividing 99131 by 77 
Our goal is to divide 99131 by 77.

Going ahead to step 1:
9 divided by 77 is 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 77

On to step 2:
If we divide 99 by 77, we get 1 and a remainder of 22.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 77 from 99 and we're left with 22.
Append the next digit (1) from the dividend to 22 and continue with: 221 / 77

Going ahead to step 3:
221 divided by 77 is 2 with a remainder of 67.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtract 154 from 221 to get 67.
Take the next digit (3) from the dividend and append it to 67, then repeat: 673 / 77

Step 4:
The number 77 fits into 673 8 times, leaving a remainder of 57.
Put 8 as the next digit of the answer. 
Result so far: 128.0
If we subtract 616 from 673, we get 57.
Fetch the next digit (1) from the dividend, attach it to 57 and continue: 571 / 77

Moving on to step 5:
77 goes into 571 7 times with a remainder of 32.
Use 7 as the next digit of our solution. 
Result so far: 1287.0
If we subtract 539 from 571, we get 32.
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 6:
320 divided by 77 is 4 with a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 1287.4
If we take 308 away from 320, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 7:
120 divided by 77 is 1 with a remainder of 43.
The next digit of our result is 1. 
Result so far: 1287.41
If we subtract 77 from 120, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 8:
When dividing 430 by 77, we get 5 with a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 1287.415
Subtract 385 from 430 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.

Let's proceed to step 9:
When dividing 450 by 77, we get 5 with a remainder of 65.
The next digit of our result is 5. 
Result so far: 1287.4155
Deduct 385 from 450 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

The final result is 1287.4155 with a remainder of 0.00065.