Let's divide 15209197 by 138
We're looking to find how many times 138 goes into 15209197.

On to step 1:
When dividing 1 by 138, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 138

On to step 2:
138 can be fit into 15 0 times, resulting in a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Take the next digit (2) from the dividend and append it to 15, then repeat: 152 / 138

Moving on to step 3:
138 can be fit into 152 1 times, resulting in a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 138 away from 152, we end up with 14.
Grab the next digit (0) from the dividend, add it to 14, then carry on: 140 / 138

Let's proceed to step 4:
When dividing 140 by 138, we get 1 with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Subtracting 138 from 140 leaves us with 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 138

Advancing to step 5:
138 goes into 29 0 times with a remainder of 29.
The next digit of our result is 0. 
Result so far: 110.0
Subtract 0 from 29 to get 29.
Take the next digit (1) from the dividend and append it to 29, then repeat: 291 / 138

Advancing to step 6:
When dividing 291 by 138, we get 2 with a remainder of 15.
Use 2 as the next digit of our solution. 
Result so far: 1102.0
Deduct 276 from 291 and we're left with 15.
Fetch the next digit (9) from the dividend, attach it to 15 and continue: 159 / 138

Step 7:
138 goes into 159 1 times with a remainder of 21.
Put 1 as the next digit of the answer. 
Result so far: 11021.0
Subtract 138 from 159 to get 21.
Fetch the next digit (7) from the dividend, attach it to 21 and continue: 217 / 138

Step 8:
The number 138 fits into 217 1 times, leaving a remainder of 79.
Record the quotient 1 as the next digit in the result. 
Result so far: 110211.0
If we take 138 away from 217, we end up with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Let's proceed to step 9:
138 goes into 790 5 times with a remainder of 100.
Put 5 as the next digit of the answer. 
Result so far: 110211.5
If we take 690 away from 790, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 10:
When dividing 1000 by 138, we get 7 with a remainder of 34.
Put 7 as the next digit of the answer. 
Result so far: 110211.57
If we take 966 away from 1000, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 11:
When dividing 340 by 138, we get 2 with a remainder of 64.
Use 2 as the next digit of our solution. 
Result so far: 110211.572
If we subtract 276 from 340, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 12:
The number 138 fits into 640 4 times, leaving a remainder of 88.
Write down 4 as next digit of the result. 
Result so far: 110211.5724
Subtracting 552 from 640 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Let's proceed to step 13:
When dividing 880 by 138, we get 6 with a remainder of 52.
Record the quotient 6 as the next digit in the result. 
Result so far: 110211.57246
Deduct 828 from 880 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 14:
When dividing 520 by 138, we get 3 with a remainder of 106.
Write down 3 as next digit of the result. 
Result so far: 110211.572463
Subtract 414 from 520 to get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Going ahead to step 15:
When dividing 1060 by 138, we get 7 with a remainder of 94.
The number 7 becomes the next digit in our result. 
Result so far: 110211.5724637
Deduct 966 from 1060 and we're left with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Going ahead to step 16:
If we divide 940 by 138, we get 6 and a remainder of 112.
Write down 6 as next digit of the result. 
Result so far: 110211.57246376
If we subtract 828 from 940, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Our division results in 110211.57246376 with a remaining 1.12e-07.