We look at the division of 17911959 by 138 
We're looking to find how many times 138 goes into 17911959.

Let's proceed to step 1:
138 can be fit into 1 0 times, resulting in 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.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 138

Advancing to step 2:
138 goes into 17 0 times with a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 17 leaves us with 17.
Fetch the next digit (9) from the dividend, attach it to 17 and continue: 179 / 138

Advancing to step 3:
The number 138 fits into 179 1 times, leaving a remainder of 41.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 138 from 179 to get 41.
Append the next digit (1) from the dividend to 41 and continue with: 411 / 138

Step 4:
411 divided by 138 is 2 with a remainder of 135.
Write down 2 as next digit of the result. 
Result so far: 12.0
The remainder is 135 after subtracting 276 from 411.
Fetch the next digit (1) from the dividend, attach it to 135 and continue: 1351 / 138

Step 5:
If we divide 1351 by 138, we get 9 and a remainder of 109.
Write down 9 as next digit of the result. 
Result so far: 129.0
Deduct 1242 from 1351 and we're left with 109.
Bring next digit (9) of the dividend behind the 109 and repeat the process: 1099 / 138

Let's proceed to step 6:
When dividing 1099 by 138, we get 7 with a remainder of 133.
Record the quotient 7 as the next digit in the result. 
Result so far: 1297.0
Subtracting 966 from 1099 leaves us with 133.
Grab the next digit (5) from the dividend, add it to 133, then carry on: 1335 / 138

On to step 7:
When dividing 1335 by 138, we get 9 with a remainder of 93.
Record the quotient 9 as the next digit in the result. 
Result so far: 12979.0
Deduct 1242 from 1335 and we're left with 93.
Grab the next digit (9) from the dividend, add it to 93, then carry on: 939 / 138

Advancing to step 8:
When dividing 939 by 138, we get 6 with a remainder of 111.
Use 6 as the next digit of our solution. 
Result so far: 129796.0
If we take 828 away from 939, we end up with 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1110, and continue the process.

Step 9:
1110 divided by 138 is 8 with a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 129796.8
Subtract 1104 from 1110 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 10:
The number 138 fits into 60 0 times, leaving a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 129796.8
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 11:
600 divided by 138 is 4 with a remainder of 48.
The next digit of our result is 4. 
Result so far: 129796.804
Subtracting 552 from 600 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 12:
If we divide 480 by 138, we get 3 and a remainder of 66.
The number 3 becomes the next digit in our result. 
Result so far: 129796.8043
Deduct 414 from 480 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 13:
When dividing 660 by 138, we get 4 with a remainder of 108.
Write down 4 as next digit of the result. 
Result so far: 129796.80434
Subtracting 552 from 660 leaves us with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Going ahead to step 14:
The number 138 fits into 1080 7 times, leaving a remainder of 114.
Put 7 as the next digit of the answer. 
Result so far: 129796.804347
Subtract 966 from 1080 to get 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Going ahead to step 15:
1140 divided by 138 is 8 with a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 129796.8043478
If we take 1104 away from 1140, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 16:
The number 138 fits into 360 2 times, leaving a remainder of 84.
Put 2 as the next digit of the answer. 
Result so far: 129796.80434782
Deduct 276 from 360 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

The final result is 129796.80434782 with a remainder of 8.4e-08.