15178407 ÷ 312 
Our goal is to divide 15178407 by 312.

Step 1:
1 divided by 312 is 0 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.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 312

On to step 2:
The number 312 fits into 15 0 times, leaving a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 15 and we're left with 15.
Include the next digit (1) from the dividend after 15, then repeat: 151 / 312

Step 3:
If we divide 151 by 312, we get 0 and a remainder of 151.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 151 to get 151.
Take the next digit (7) from the dividend and append it to 151, then repeat: 1517 / 312

Step 4:
312 goes into 1517 4 times with a remainder of 269.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 1248 from 1517 and we're left with 269.
Include the next digit (8) from the dividend after 269, then repeat: 2698 / 312

Advancing to step 5:
When dividing 2698 by 312, we get 8 with a remainder of 202.
The number 8 becomes the next digit in our result. 
Result so far: 48.0
If we subtract 2496 from 2698, we get 202.
Take the next digit (4) from the dividend and append it to 202, then repeat: 2024 / 312

Step 6:
312 goes into 2024 6 times with a remainder of 152.
The number 6 becomes the next digit in our result. 
Result so far: 486.0
If we take 1872 away from 2024, we end up with 152.
Grab the next digit (0) from the dividend, add it to 152, then carry on: 1520 / 312

Going ahead to step 7:
1520 divided by 312 is 4 with a remainder of 272.
The number 4 becomes the next digit in our result. 
Result so far: 4864.0
Subtracting 1248 from 1520 leaves us with 272.
Include the next digit (7) from the dividend after 272, then repeat: 2727 / 312

On to step 8:
312 goes into 2727 8 times with a remainder of 231.
The number 8 becomes the next digit in our result. 
Result so far: 48648.0
If we take 2496 away from 2727, we end up with 231.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

Let's proceed to step 9:
If we divide 2310 by 312, we get 7 and a remainder of 126.
Record the quotient 7 as the next digit in the result. 
Result so far: 48648.7
If we subtract 2184 from 2310, we get 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Step 10:
312 goes into 1260 4 times with a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 48648.74
Subtract 1248 from 1260 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 11:
312 goes into 120 0 times with a remainder of 120.
The number 0 becomes the next digit in our result. 
Result so far: 48648.74
Subtracting 0 from 120 leaves us with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 12:
312 goes into 1200 3 times with a remainder of 264.
Use 3 as the next digit of our solution. 
Result so far: 48648.7403
Subtracting 936 from 1200 leaves us with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Let's proceed to step 13:
If we divide 2640 by 312, we get 8 and a remainder of 144.
Put 8 as the next digit of the answer. 
Result so far: 48648.74038
If we take 2496 away from 2640, we end up with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Going ahead to step 14:
If we divide 1440 by 312, we get 4 and a remainder of 192.
Use 4 as the next digit of our solution. 
Result so far: 48648.740384
Deduct 1248 from 1440 and we're left with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

On to step 15:
The number 312 fits into 1920 6 times, leaving a remainder of 48.
Use 6 as the next digit of our solution. 
Result so far: 48648.7403846
Deduct 1872 from 1920 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 16:
If we divide 480 by 312, we get 1 and a remainder of 168.
Use 1 as the next digit of our solution. 
Result so far: 48648.74038461
If we subtract 312 from 480, we get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

In conclusion, the division gives 48648.74038461 with a balance of 1.68e-07.