20180116 ÷ 399 
Let's see how many times 399 fits into 20180116.

Let's proceed to step 1:
399 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 399

Moving on to step 2:
20 divided by 399 is 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 20, we end up with 20.
Include the next digit (1) from the dividend after 20, then repeat: 201 / 399

Advancing to step 3:
201 divided by 399 is 0 with a remainder of 201.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 201 and we're left with 201.
Include the next digit (8) from the dividend after 201, then repeat: 2018 / 399

Going ahead to step 4:
If we divide 2018 by 399, we get 5 and a remainder of 23.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Deduct 1995 from 2018 and we're left with 23.
Include the next digit (0) from the dividend after 23, then repeat: 230 / 399

Going ahead to step 5:
The number 399 fits into 230 0 times, leaving a remainder of 230.
Use 0 as the next digit of our solution. 
Result so far: 50.0
Subtracting 0 from 230 leaves us with 230.
Fetch the next digit (1) from the dividend, attach it to 230 and continue: 2301 / 399

Let's proceed to step 6:
2301 divided by 399 is 5 with a remainder of 306.
Write down 5 as next digit of the result. 
Result so far: 505.0
The remainder is 306 after subtracting 1995 from 2301.
Bring next digit (1) of the dividend behind the 306 and repeat the process: 3061 / 399

Advancing to step 7:
399 goes into 3061 7 times with a remainder of 268.
The number 7 becomes the next digit in our result. 
Result so far: 5057.0
Subtracting 2793 from 3061 leaves us with 268.
Take the next digit (6) from the dividend and append it to 268, then repeat: 2686 / 399

On to step 8:
2686 divided by 399 is 6 with a remainder of 292.
Record the quotient 6 as the next digit in the result. 
Result so far: 50576.0
Deduct 2394 from 2686 and we're left with 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

Advancing to step 9:
If we divide 2920 by 399, we get 7 and a remainder of 127.
Write down 7 as next digit of the result. 
Result so far: 50576.7
Subtract 2793 from 2920 to get 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

Advancing to step 10:
399 can be fit into 1270 3 times, resulting in a remainder of 73.
Use 3 as the next digit of our solution. 
Result so far: 50576.73
Subtract 1197 from 1270 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

On to step 11:
399 goes into 730 1 times with a remainder of 331.
Write down 1 as next digit of the result. 
Result so far: 50576.731
Subtract 399 from 730 to get 331.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3310, and continue the process.

Step 12:
The number 399 fits into 3310 8 times, leaving a remainder of 118.
Use 8 as the next digit of our solution. 
Result so far: 50576.7318
Subtract 3192 from 3310 to get 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

On to step 13:
If we divide 1180 by 399, we get 2 and a remainder of 382.
Record the quotient 2 as the next digit in the result. 
Result so far: 50576.73182
Subtract 798 from 1180 to get 382.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

Going ahead to step 14:
399 can be fit into 3820 9 times, resulting in a remainder of 229.
The next digit of our result is 9. 
Result so far: 50576.731829
If we take 3591 away from 3820, we end up with 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

Going ahead to step 15:
The number 399 fits into 2290 5 times, leaving a remainder of 295.
Put 5 as the next digit of the answer. 
Result so far: 50576.7318295
Deduct 1995 from 2290 and we're left with 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Let's proceed to step 16:
2950 divided by 399 is 7 with a remainder of 157.
Use 7 as the next digit of our solution. 
Result so far: 50576.73182957
If we take 2793 away from 2950, we end up with 157.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

After the division, we end up with 50576.73182957 and a remainder of 1.57e-07.