Let's divide 1343536 by 840
We want to figure out the number of times 1343536 can be divided by 840.

Advancing to step 1:
1 divided by 840 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 840

Step 2:
The number 840 fits into 13 0 times, leaving a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Grab the next digit (4) from the dividend, add it to 13, then carry on: 134 / 840

Moving on to step 3:
840 goes into 134 0 times with a remainder of 134.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 134 leaves us with 134.
Append the next digit (3) from the dividend to 134 and continue with: 1343 / 840

On to step 4:
When dividing 1343 by 840, we get 1 with a remainder of 503.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 840 from 1343, we get 503.
Include the next digit (5) from the dividend after 503, then repeat: 5035 / 840

Moving on to step 5:
If we divide 5035 by 840, we get 5 and a remainder of 835.
Write down 5 as next digit of the result. 
Result so far: 15.0
Subtract 4200 from 5035 to get 835.
Fetch the next digit (3) from the dividend, attach it to 835 and continue: 8353 / 840

Going ahead to step 6:
If we divide 8353 by 840, we get 9 and a remainder of 793.
Use 9 as the next digit of our solution. 
Result so far: 159.0
Deduct 7560 from 8353 and we're left with 793.
Bring next digit (6) of the dividend behind the 793 and repeat the process: 7936 / 840

Going ahead to step 7:
7936 divided by 840 is 9 with a remainder of 376.
The number 9 becomes the next digit in our result. 
Result so far: 1599.0
Deduct 7560 from 7936 and we're left with 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

Let's proceed to step 8:
When dividing 3760 by 840, we get 4 with a remainder of 400.
Write down 4 as next digit of the result. 
Result so far: 1599.4
Subtracting 3360 from 3760 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Going ahead to step 9:
840 goes into 4000 4 times with a remainder of 640.
Write down 4 as next digit of the result. 
Result so far: 1599.44
Subtract 3360 from 4000 to get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Our division results in 1599.44 with a remaining 0.64.