15863770 divided by 387 
We're looking to find how many times 387 goes into 15863770.

Going ahead to step 1:
387 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 387

Let's proceed to step 2:
387 can be fit into 15 0 times, resulting in a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Bring next digit (8) of the dividend behind the 15 and repeat the process: 158 / 387

Moving on to step 3:
The number 387 fits into 158 0 times, leaving a remainder of 158.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 158, we get 158.
Fetch the next digit (6) from the dividend, attach it to 158 and continue: 1586 / 387

Moving on to step 4:
387 goes into 1586 4 times with a remainder of 38.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 1548 from 1586 leaves us with 38.
Fetch the next digit (3) from the dividend, attach it to 38 and continue: 383 / 387

On to step 5:
When dividing 383 by 387, we get 0 with a remainder of 383.
Put 0 as the next digit of the answer. 
Result so far: 40.0
Subtract 0 from 383 to get 383.
Bring next digit (7) of the dividend behind the 383 and repeat the process: 3837 / 387

Advancing to step 6:
387 goes into 3837 9 times with a remainder of 354.
Write down 9 as next digit of the result. 
Result so far: 409.0
Subtract 3483 from 3837 to get 354.
Include the next digit (7) from the dividend after 354, then repeat: 3547 / 387

Step 7:
387 can be fit into 3547 9 times, resulting in a remainder of 64.
The next digit of our result is 9. 
Result so far: 4099.0
Subtracting 3483 from 3547 leaves us with 64.
Include the next digit (0) from the dividend after 64, then repeat: 640 / 387

Advancing to step 8:
640 divided by 387 is 1 with a remainder of 253.
Record the quotient 1 as the next digit in the result. 
Result so far: 40991.0
Subtract 387 from 640 to get 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Let's proceed to step 9:
2530 divided by 387 is 6 with a remainder of 208.
The next digit of our result is 6. 
Result so far: 40991.6
Subtract 2322 from 2530 to get 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Moving on to step 10:
When dividing 2080 by 387, we get 5 with a remainder of 145.
Put 5 as the next digit of the answer. 
Result so far: 40991.65
If we subtract 1935 from 2080, we get 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Going ahead to step 11:
387 goes into 1450 3 times with a remainder of 289.
Write down 3 as next digit of the result. 
Result so far: 40991.653
Subtract 1161 from 1450 to get 289.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2890, and continue the process.

Let's proceed to step 12:
2890 divided by 387 is 7 with a remainder of 181.
Record the quotient 7 as the next digit in the result. 
Result so far: 40991.6537
Subtract 2709 from 2890 to get 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

Let's proceed to step 13:
When dividing 1810 by 387, we get 4 with a remainder of 262.
Use 4 as the next digit of our solution. 
Result so far: 40991.65374
The remainder is 262 after subtracting 1548 from 1810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

Let's proceed to step 14:
2620 divided by 387 is 6 with a remainder of 298.
Use 6 as the next digit of our solution. 
Result so far: 40991.653746
Deduct 2322 from 2620 and we're left with 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Step 15:
The number 387 fits into 2980 7 times, leaving a remainder of 271.
The next digit of our result is 7. 
Result so far: 40991.6537467
Subtract 2709 from 2980 to get 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Advancing to step 16:
387 goes into 2710 7 times with a remainder of 1.
The next digit of our result is 7. 
Result so far: 40991.65374677
Subtracting 2709 from 2710 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

In conclusion, the division gives 40991.65374677 with a balance of 1e-09.