Let's divide 12386987 by 749
Our goal is to divide 12386987 by 749.

Step 1:
749 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 749

On to step 2:
When dividing 12 by 749, we get 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Include the next digit (3) from the dividend after 12, then repeat: 123 / 749

Step 3:
749 goes into 123 0 times with a remainder of 123.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 123 leaves us with 123.
Grab the next digit (8) from the dividend, add it to 123, then carry on: 1238 / 749

Moving on to step 4:
If we divide 1238 by 749, we get 1 and a remainder of 489.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 749 from 1238 leaves us with 489.
Grab the next digit (6) from the dividend, add it to 489, then carry on: 4896 / 749

Going ahead to step 5:
4896 divided by 749 is 6 with a remainder of 402.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we subtract 4494 from 4896, we get 402.
Grab the next digit (9) from the dividend, add it to 402, then carry on: 4029 / 749

Step 6:
The number 749 fits into 4029 5 times, leaving a remainder of 284.
The number 5 becomes the next digit in our result. 
Result so far: 165.0
Deduct 3745 from 4029 and we're left with 284.
Grab the next digit (8) from the dividend, add it to 284, then carry on: 2848 / 749

Advancing to step 7:
When dividing 2848 by 749, we get 3 with a remainder of 601.
The next digit of our result is 3. 
Result so far: 1653.0
Deduct 2247 from 2848 and we're left with 601.
Fetch the next digit (7) from the dividend, attach it to 601 and continue: 6017 / 749

Let's proceed to step 8:
749 goes into 6017 8 times with a remainder of 25.
Write down 8 as next digit of the result. 
Result so far: 16538.0
Subtract 5992 from 6017 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 9:
250 divided by 749 is 0 with a remainder of 250.
Record the quotient 0 as the next digit in the result. 
Result so far: 16538.0
Deduct 0 from 250 and we're left with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Advancing to step 10:
The number 749 fits into 2500 3 times, leaving a remainder of 253.
The next digit of our result is 3. 
Result so far: 16538.03
The remainder is 253 after subtracting 2247 from 2500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Step 11:
When dividing 2530 by 749, we get 3 with a remainder of 283.
The next digit of our result is 3. 
Result so far: 16538.033
Subtracting 2247 from 2530 leaves us with 283.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2830, and continue the process.

After the division, we end up with 16538.033 and a remainder of 0.0283.