We're dividing 1388104 by 991 
We want to divide 1388104 by 991.

Step 1:
991 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 991

On to step 2:
When dividing 13 by 991, we get 0 with a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 13 to get 13.
Bring next digit (8) of the dividend behind the 13 and repeat the process: 138 / 991

Advancing to step 3:
138 divided by 991 is 0 with a remainder of 138.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 138, we get 138.
Grab the next digit (8) from the dividend, add it to 138, then carry on: 1388 / 991

Going ahead to step 4:
1388 divided by 991 is 1 with a remainder of 397.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 991 from 1388, we get 397.
Append the next digit (1) from the dividend to 397 and continue with: 3971 / 991

Moving on to step 5:
3971 divided by 991 is 4 with a remainder of 7.
Put 4 as the next digit of the answer. 
Result so far: 14.0
The remainder is 7 after subtracting 3964 from 3971.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 991

On to step 6:
The number 991 fits into 70 0 times, leaving a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 140.0
If we take 0 away from 70, we end up with 70.
Grab the next digit (4) from the dividend, add it to 70, then carry on: 704 / 991

Let's proceed to step 7:
The number 991 fits into 704 0 times, leaving a remainder of 704.
The number 0 becomes the next digit in our result. 
Result so far: 1400.0
Subtract 0 from 704 to get 704.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

Advancing to step 8:
If we divide 7040 by 991, we get 7 and a remainder of 103.
The next digit of our result is 7. 
Result so far: 1400.7
Deduct 6937 from 7040 and we're left with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Let's proceed to step 9:
If we divide 1030 by 991, we get 1 and a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 1400.71
If we subtract 991 from 1030, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Going ahead to step 10:
991 can be fit into 390 0 times, resulting in a remainder of 390.
Use 0 as the next digit of our solution. 
Result so far: 1400.71
Subtract 0 from 390 to get 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Advancing to step 11:
3900 divided by 991 is 3 with a remainder of 927.
The next digit of our result is 3. 
Result so far: 1400.7103
The remainder is 927 after subtracting 2973 from 3900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9270, and continue the process.

Let's proceed to step 12:
991 can be fit into 9270 9 times, resulting in a remainder of 351.
Put 9 as the next digit of the answer. 
Result so far: 1400.71039
If we subtract 8919 from 9270, we get 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Advancing to step 13:
The number 991 fits into 3510 3 times, leaving a remainder of 537.
Use 3 as the next digit of our solution. 
Result so far: 1400.710393
Subtract 2973 from 3510 to get 537.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5370, and continue the process.

Let's proceed to step 14:
If we divide 5370 by 991, we get 5 and a remainder of 415.
The number 5 becomes the next digit in our result. 
Result so far: 1400.7103935
If we subtract 4955 from 5370, we get 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Going ahead to step 15:
The number 991 fits into 4150 4 times, leaving a remainder of 186.
Write down 4 as next digit of the result. 
Result so far: 1400.71039354
Subtracting 3964 from 4150 leaves us with 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

The final outcome is 1400.71039354, with a leftover of 1.86e-07.