2115739 divided by 138 
We want to figure out the number of times 2115739 can be divided by 138.

On to step 1:
138 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 138

On to step 2:
The number 138 fits into 21 0 times, leaving a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Include the next digit (1) from the dividend after 21, then repeat: 211 / 138

Step 3:
If we divide 211 by 138, we get 1 and a remainder of 73.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 73 after subtracting 138 from 211.
Bring next digit (5) of the dividend behind the 73 and repeat the process: 735 / 138

Going ahead to step 4:
The number 138 fits into 735 5 times, leaving a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we subtract 690 from 735, we get 45.
Include the next digit (7) from the dividend after 45, then repeat: 457 / 138

On to step 5:
138 can be fit into 457 3 times, resulting in a remainder of 43.
Use 3 as the next digit of our solution. 
Result so far: 153.0
Subtracting 414 from 457 leaves us with 43.
Include the next digit (3) from the dividend after 43, then repeat: 433 / 138

Step 6:
433 divided by 138 is 3 with a remainder of 19.
The next digit of our result is 3. 
Result so far: 1533.0
The remainder is 19 after subtracting 414 from 433.
Append the next digit (9) from the dividend to 19 and continue with: 199 / 138

Step 7:
When dividing 199 by 138, we get 1 with a remainder of 61.
The next digit of our result is 1. 
Result so far: 15331.0
If we take 138 away from 199, we end up with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Let's proceed to step 8:
If we divide 610 by 138, we get 4 and a remainder of 58.
The number 4 becomes the next digit in our result. 
Result so far: 15331.4
Subtracting 552 from 610 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 9:
The number 138 fits into 580 4 times, leaving a remainder of 28.
The next digit of our result is 4. 
Result so far: 15331.44
Subtract 552 from 580 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

After the division, we end up with 15331.44 and a remainder of 0.028.