Let's divide 1604235 by 861
We want to figure out the number of times 1604235 can be divided by 861.

On to step 1:
The number 861 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 861

On to step 2:
When dividing 16 by 861, we get 0 with a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Append the next digit (0) from the dividend to 16 and continue with: 160 / 861

On to step 3:
861 can be fit into 160 0 times, resulting in a remainder of 160.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 160 to get 160.
Include the next digit (4) from the dividend after 160, then repeat: 1604 / 861

Moving on to step 4:
861 can be fit into 1604 1 times, resulting in a remainder of 743.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 743 after subtracting 861 from 1604.
Grab the next digit (2) from the dividend, add it to 743, then carry on: 7432 / 861

Step 5:
When dividing 7432 by 861, we get 8 with a remainder of 544.
The number 8 becomes the next digit in our result. 
Result so far: 18.0
Subtracting 6888 from 7432 leaves us with 544.
Grab the next digit (3) from the dividend, add it to 544, then carry on: 5443 / 861

Going ahead to step 6:
The number 861 fits into 5443 6 times, leaving a remainder of 277.
Record the quotient 6 as the next digit in the result. 
Result so far: 186.0
Subtract 5166 from 5443 to get 277.
Include the next digit (5) from the dividend after 277, then repeat: 2775 / 861

Let's proceed to step 7:
If we divide 2775 by 861, we get 3 and a remainder of 192.
Put 3 as the next digit of the answer. 
Result so far: 1863.0
Subtract 2583 from 2775 to get 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

On to step 8:
When dividing 1920 by 861, we get 2 with a remainder of 198.
Write down 2 as next digit of the result. 
Result so far: 1863.2
If we take 1722 away from 1920, we end up with 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Step 9:
If we divide 1980 by 861, we get 2 and a remainder of 258.
Write down 2 as next digit of the result. 
Result so far: 1863.22
Subtracting 1722 from 1980 leaves us with 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Our division results in 1863.22 with a remaining 0.258.