12387150 ÷ 805 
We want to figure out the number of times 12387150 can be divided by 805.

Let's proceed to step 1:
If we divide 1 by 805, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 805

Going ahead to step 2:
12 divided by 805 is 0 with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Include the next digit (3) from the dividend after 12, then repeat: 123 / 805

On to step 3:
When dividing 123 by 805, we get 0 with a remainder of 123.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 123, we end up with 123.
Fetch the next digit (8) from the dividend, attach it to 123 and continue: 1238 / 805

Moving on to step 4:
1238 divided by 805 is 1 with a remainder of 433.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 805 from 1238 to get 433.
Take the next digit (7) from the dividend and append it to 433, then repeat: 4337 / 805

Step 5:
4337 divided by 805 is 5 with a remainder of 312.
Use 5 as the next digit of our solution. 
Result so far: 15.0
The remainder is 312 after subtracting 4025 from 4337.
Fetch the next digit (1) from the dividend, attach it to 312 and continue: 3121 / 805

On to step 6:
3121 divided by 805 is 3 with a remainder of 706.
Record the quotient 3 as the next digit in the result. 
Result so far: 153.0
Subtract 2415 from 3121 to get 706.
Fetch the next digit (5) from the dividend, attach it to 706 and continue: 7065 / 805

Step 7:
805 can be fit into 7065 8 times, resulting in a remainder of 625.
The number 8 becomes the next digit in our result. 
Result so far: 1538.0
Subtracting 6440 from 7065 leaves us with 625.
Include the next digit (0) from the dividend after 625, then repeat: 6250 / 805

Moving on to step 8:
When dividing 6250 by 805, we get 7 with a remainder of 615.
Use 7 as the next digit of our solution. 
Result so far: 15387.0
Deduct 5635 from 6250 and we're left with 615.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6150, and continue the process.

Moving on to step 9:
805 can be fit into 6150 7 times, resulting in a remainder of 515.
The number 7 becomes the next digit in our result. 
Result so far: 15387.7
If we take 5635 away from 6150, we end up with 515.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

Let's proceed to step 10:
805 goes into 5150 6 times with a remainder of 320.
The next digit of our result is 6. 
Result so far: 15387.76
The remainder is 320 after subtracting 4830 from 5150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 11:
805 can be fit into 3200 3 times, resulting in a remainder of 785.
Record the quotient 3 as the next digit in the result. 
Result so far: 15387.763
If we take 2415 away from 3200, we end up with 785.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7850, and continue the process.

Going ahead to step 12:
805 can be fit into 7850 9 times, resulting in a remainder of 605.
Put 9 as the next digit of the answer. 
Result so far: 15387.7639
The remainder is 605 after subtracting 7245 from 7850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6050, and continue the process.

Let's proceed to step 13:
The number 805 fits into 6050 7 times, leaving a remainder of 415.
The next digit of our result is 7. 
Result so far: 15387.76397
The remainder is 415 after subtracting 5635 from 6050.
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 14:
805 goes into 4150 5 times with a remainder of 125.
Use 5 as the next digit of our solution. 
Result so far: 15387.763975
If we take 4025 away from 4150, we end up with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Advancing to step 15:
805 goes into 1250 1 times with a remainder of 445.
Use 1 as the next digit of our solution. 
Result so far: 15387.7639751
Deduct 805 from 1250 and we're left with 445.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

Going ahead to step 16:
4450 divided by 805 is 5 with a remainder of 425.
Put 5 as the next digit of the answer. 
Result so far: 15387.76397515
If we subtract 4025 from 4450, we get 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

The final result is 15387.76397515 with a remainder of 4.25e-07.