We're dividing 138790 by 99 
Let's see how many times 99 fits into 138790.

On to step 1:
99 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 99

Step 2:
If we divide 13 by 99, we get 0 and a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 13 to get 13.
Grab the next digit (8) from the dividend, add it to 13, then carry on: 138 / 99

Advancing to step 3:
When dividing 138 by 99, we get 1 with a remainder of 39.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 39 after subtracting 99 from 138.
Grab the next digit (7) from the dividend, add it to 39, then carry on: 397 / 99

Moving on to step 4:
When dividing 397 by 99, we get 4 with a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
The remainder is 1 after subtracting 396 from 397.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 99

Moving on to step 5:
19 divided by 99 is 0 with a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 140.0
The remainder is 19 after subtracting 0 from 19.
Grab the next digit (0) from the dividend, add it to 19, then carry on: 190 / 99

On to step 6:
The number 99 fits into 190 1 times, leaving a remainder of 91.
Write down 1 as next digit of the result. 
Result so far: 1401.0
Deduct 99 from 190 and we're left with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Step 7:
The number 99 fits into 910 9 times, leaving a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 1401.9
Subtract 891 from 910 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 8:
190 divided by 99 is 1 with a remainder of 91.
The number 1 becomes the next digit in our result. 
Result so far: 1401.91
The remainder is 91 after subtracting 99 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

On to step 9:
If we divide 910 by 99, we get 9 and a remainder of 19.
Record the quotient 9 as the next digit in the result. 
Result so far: 1401.919
If we take 891 away from 910, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 10:
99 goes into 190 1 times with a remainder of 91.
The next digit of our result is 1. 
Result so far: 1401.9191
Deduct 99 from 190 and we're left with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Going ahead to step 11:
99 goes into 910 9 times with a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 1401.91919
Subtract 891 from 910 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 12:
When dividing 190 by 99, we get 1 with a remainder of 91.
Record the quotient 1 as the next digit in the result. 
Result so far: 1401.919191
Deduct 99 from 190 and we're left with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Going ahead to step 13:
99 can be fit into 910 9 times, resulting in a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 1401.9191919
Deduct 891 from 910 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 14:
190 divided by 99 is 1 with a remainder of 91.
The number 1 becomes the next digit in our result. 
Result so far: 1401.91919191
Subtract 99 from 190 to get 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

The final result is 1401.91919191 with a remainder of 9.1e-08.