We look at the division of 17303577 by 840 
Let's see how many times 840 fits into 17303577.

On to step 1:
The number 840 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 840

Advancing to step 2:
If we divide 17 by 840, we get 0 and a remainder of 17.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 17 after subtracting 0 from 17.
Grab the next digit (3) from the dividend, add it to 17, then carry on: 173 / 840

Advancing to step 3:
840 goes into 173 0 times with a remainder of 173.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 173 to get 173.
Append the next digit (0) from the dividend to 173 and continue with: 1730 / 840

On to step 4:
1730 divided by 840 is 2 with a remainder of 50.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 1680 from 1730 leaves us with 50.
Grab the next digit (3) from the dividend, add it to 50, then carry on: 503 / 840

Step 5:
840 can be fit into 503 0 times, resulting in a remainder of 503.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Subtract 0 from 503 to get 503.
Append the next digit (5) from the dividend to 503 and continue with: 5035 / 840

Advancing to step 6:
When dividing 5035 by 840, we get 5 with a remainder of 835.
Put 5 as the next digit of the answer. 
Result so far: 205.0
If we subtract 4200 from 5035, we get 835.
Bring next digit (7) of the dividend behind the 835 and repeat the process: 8357 / 840

Step 7:
8357 divided by 840 is 9 with a remainder of 797.
The number 9 becomes the next digit in our result. 
Result so far: 2059.0
If we take 7560 away from 8357, we end up with 797.
Take the next digit (7) from the dividend and append it to 797, then repeat: 7977 / 840

Step 8:
If we divide 7977 by 840, we get 9 and a remainder of 417.
Put 9 as the next digit of the answer. 
Result so far: 20599.0
If we take 7560 away from 7977, we end up with 417.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4170, and continue the process.

Going ahead to step 9:
The number 840 fits into 4170 4 times, leaving a remainder of 810.
The next digit of our result is 4. 
Result so far: 20599.4
Deduct 3360 from 4170 and we're left with 810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8100, and continue the process.

Step 10:
840 can be fit into 8100 9 times, resulting in a remainder of 540.
Record the quotient 9 as the next digit in the result. 
Result so far: 20599.49
If we subtract 7560 from 8100, we get 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Moving on to step 11:
The number 840 fits into 5400 6 times, leaving a remainder of 360.
The next digit of our result is 6. 
Result so far: 20599.496
Subtract 5040 from 5400 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Let's proceed to step 12:
When dividing 3600 by 840, we get 4 with a remainder of 240.
Record the quotient 4 as the next digit in the result. 
Result so far: 20599.4964
The remainder is 240 after subtracting 3360 from 3600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Advancing to step 13:
840 goes into 2400 2 times with a remainder of 720.
Write down 2 as next digit of the result. 
Result so far: 20599.49642
If we take 1680 away from 2400, we end up with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

Step 14:
The number 840 fits into 7200 8 times, leaving a remainder of 480.
Use 8 as the next digit of our solution. 
Result so far: 20599.496428
Subtracting 6720 from 7200 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Step 15:
4800 divided by 840 is 5 with a remainder of 600.
The next digit of our result is 5. 
Result so far: 20599.4964285
If we take 4200 away from 4800, we end up with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Advancing to step 16:
When dividing 6000 by 840, we get 7 with a remainder of 120.
Put 7 as the next digit of the answer. 
Result so far: 20599.49642857
The remainder is 120 after subtracting 5880 from 6000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Our division results in 20599.49642857 with a remaining 1.2e-07.