84080186 ÷ 999 
Let's see how many times 999 fits into 84080186.

Moving on to step 1:
The number 999 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 999

On to step 2:
999 goes into 84 0 times with a remainder of 84.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 84 and we're left with 84.
Grab the next digit (0) from the dividend, add it to 84, then carry on: 840 / 999

Moving on to step 3:
999 can be fit into 840 0 times, resulting in a remainder of 840.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 840, we get 840.
Fetch the next digit (8) from the dividend, attach it to 840 and continue: 8408 / 999

On to step 4:
The number 999 fits into 8408 8 times, leaving a remainder of 416.
Use 8 as the next digit of our solution. 
Result so far: 8.0
The remainder is 416 after subtracting 7992 from 8408.
Append the next digit (0) from the dividend to 416 and continue with: 4160 / 999

Advancing to step 5:
999 goes into 4160 4 times with a remainder of 164.
Write down 4 as next digit of the result. 
Result so far: 84.0
Deduct 3996 from 4160 and we're left with 164.
Include the next digit (1) from the dividend after 164, then repeat: 1641 / 999

Step 6:
If we divide 1641 by 999, we get 1 and a remainder of 642.
The next digit of our result is 1. 
Result so far: 841.0
If we take 999 away from 1641, we end up with 642.
Include the next digit (8) from the dividend after 642, then repeat: 6428 / 999

Let's proceed to step 7:
When dividing 6428 by 999, we get 6 with a remainder of 434.
The next digit of our result is 6. 
Result so far: 8416.0
If we take 5994 away from 6428, we end up with 434.
Append the next digit (6) from the dividend to 434 and continue with: 4346 / 999

Advancing to step 8:
999 goes into 4346 4 times with a remainder of 350.
The next digit of our result is 4. 
Result so far: 84164.0
If we subtract 3996 from 4346, we get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Going ahead to step 9:
The number 999 fits into 3500 3 times, leaving a remainder of 503.
Use 3 as the next digit of our solution. 
Result so far: 84164.3
Deduct 2997 from 3500 and we're left with 503.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5030, and continue the process.

Let's proceed to step 10:
The number 999 fits into 5030 5 times, leaving a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 84164.35
If we subtract 4995 from 5030, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 11:
999 goes into 350 0 times with a remainder of 350.
Put 0 as the next digit of the answer. 
Result so far: 84164.35
Subtracting 0 from 350 leaves us with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Moving on to step 12:
999 goes into 3500 3 times with a remainder of 503.
Write down 3 as next digit of the result. 
Result so far: 84164.3503
Deduct 2997 from 3500 and we're left with 503.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5030, and continue the process.

Going ahead to step 13:
When dividing 5030 by 999, we get 5 with a remainder of 35.
The next digit of our result is 5. 
Result so far: 84164.35035
The remainder is 35 after subtracting 4995 from 5030.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 14:
When dividing 350 by 999, we get 0 with a remainder of 350.
Use 0 as the next digit of our solution. 
Result so far: 84164.35035
If we subtract 0 from 350, we get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Moving on to step 15:
3500 divided by 999 is 3 with a remainder of 503.
The number 3 becomes the next digit in our result. 
Result so far: 84164.3503503
If we subtract 2997 from 3500, we get 503.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5030, and continue the process.

Let's proceed to step 16:
999 can be fit into 5030 5 times, resulting in a remainder of 35.
The next digit of our result is 5. 
Result so far: 84164.35035035
Subtracting 4995 from 5030 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

After the division, we end up with 84164.35035035 and a remainder of 3.5e-08.