17860985 ÷ 840 
We're looking to find how many times 840 goes into 17860985.

Let's proceed to step 1:
1 divided by 840 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 840

Moving on to step 2:
17 divided by 840 is 0 with a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 17, we end up with 17.
Take the next digit (8) from the dividend and append it to 17, then repeat: 178 / 840

Advancing to step 3:
840 can be fit into 178 0 times, resulting in a remainder of 178.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 178 to get 178.
Bring next digit (6) of the dividend behind the 178 and repeat the process: 1786 / 840

Going ahead to step 4:
If we divide 1786 by 840, we get 2 and a remainder of 106.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 1680 from 1786 leaves us with 106.
Include the next digit (0) from the dividend after 106, then repeat: 1060 / 840

Moving on to step 5:
840 can be fit into 1060 1 times, resulting in a remainder of 220.
Use 1 as the next digit of our solution. 
Result so far: 21.0
Subtract 840 from 1060 to get 220.
Grab the next digit (9) from the dividend, add it to 220, then carry on: 2209 / 840

Let's proceed to step 6:
If we divide 2209 by 840, we get 2 and a remainder of 529.
Put 2 as the next digit of the answer. 
Result so far: 212.0
Subtracting 1680 from 2209 leaves us with 529.
Bring next digit (8) of the dividend behind the 529 and repeat the process: 5298 / 840

Let's proceed to step 7:
The number 840 fits into 5298 6 times, leaving a remainder of 258.
Put 6 as the next digit of the answer. 
Result so far: 2126.0
Subtracting 5040 from 5298 leaves us with 258.
Bring next digit (5) of the dividend behind the 258 and repeat the process: 2585 / 840

On to step 8:
The number 840 fits into 2585 3 times, leaving a remainder of 65.
Record the quotient 3 as the next digit in the result. 
Result so far: 21263.0
Subtracting 2520 from 2585 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 9:
If we divide 650 by 840, we get 0 and a remainder of 650.
Record the quotient 0 as the next digit in the result. 
Result so far: 21263.0
Deduct 0 from 650 and we're left with 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

On to step 10:
840 goes into 6500 7 times with a remainder of 620.
The number 7 becomes the next digit in our result. 
Result so far: 21263.07
The remainder is 620 after subtracting 5880 from 6500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

Moving on to step 11:
840 goes into 6200 7 times with a remainder of 320.
Use 7 as the next digit of our solution. 
Result so far: 21263.077
The remainder is 320 after subtracting 5880 from 6200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

The quotient of the division is 21263.077, and the remainder is 0.032.