Let's divide 1343842 by 999
We're looking to find how many times 999 goes into 1343842.

Step 1:
When dividing 1 by 999, we get 0 with 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.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 999

On to step 2:
When dividing 13 by 999, we get 0 with a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Bring next digit (4) of the dividend behind the 13 and repeat the process: 134 / 999

On to step 3:
134 divided by 999 is 0 with a remainder of 134.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 134, we end up with 134.
Fetch the next digit (3) from the dividend, attach it to 134 and continue: 1343 / 999

Going ahead to step 4:
1343 divided by 999 is 1 with a remainder of 344.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 344 after subtracting 999 from 1343.
Fetch the next digit (8) from the dividend, attach it to 344 and continue: 3448 / 999

Advancing to step 5:
999 can be fit into 3448 3 times, resulting in a remainder of 451.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
The remainder is 451 after subtracting 2997 from 3448.
Fetch the next digit (4) from the dividend, attach it to 451 and continue: 4514 / 999

On to step 6:
The number 999 fits into 4514 4 times, leaving a remainder of 518.
Write down 4 as next digit of the result. 
Result so far: 134.0
Subtract 3996 from 4514 to get 518.
Bring next digit (2) of the dividend behind the 518 and repeat the process: 5182 / 999

Step 7:
999 goes into 5182 5 times with a remainder of 187.
The number 5 becomes the next digit in our result. 
Result so far: 1345.0
The remainder is 187 after subtracting 4995 from 5182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

Moving on to step 8:
999 can be fit into 1870 1 times, resulting in a remainder of 871.
Record the quotient 1 as the next digit in the result. 
Result so far: 1345.1
Subtracting 999 from 1870 leaves us with 871.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8710, and continue the process.

On to step 9:
The number 999 fits into 8710 8 times, leaving a remainder of 718.
The number 8 becomes the next digit in our result. 
Result so far: 1345.18
If we take 7992 away from 8710, we end up with 718.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7180, and continue the process.

On to step 10:
When dividing 7180 by 999, we get 7 with a remainder of 187.
Use 7 as the next digit of our solution. 
Result so far: 1345.187
Subtracting 6993 from 7180 leaves us with 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

Advancing to step 11:
999 goes into 1870 1 times with a remainder of 871.
The next digit of our result is 1. 
Result so far: 1345.1871
Deduct 999 from 1870 and we're left with 871.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8710, and continue the process.

Moving on to step 12:
When dividing 8710 by 999, we get 8 with a remainder of 718.
The number 8 becomes the next digit in our result. 
Result so far: 1345.18718
If we subtract 7992 from 8710, we get 718.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7180, and continue the process.

Going ahead to step 13:
The number 999 fits into 7180 7 times, leaving a remainder of 187.
The number 7 becomes the next digit in our result. 
Result so far: 1345.187187
If we take 6993 away from 7180, we end up with 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

On to step 14:
1870 divided by 999 is 1 with a remainder of 871.
The number 1 becomes the next digit in our result. 
Result so far: 1345.1871871
If we subtract 999 from 1870, we get 871.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8710, and continue the process.

Advancing to step 15:
The number 999 fits into 8710 8 times, leaving a remainder of 718.
Use 8 as the next digit of our solution. 
Result so far: 1345.18718718
Subtracting 7992 from 8710 leaves us with 718.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7180, and continue the process.

The final result is 1345.18718718 with a remainder of 7.18e-07.