We divide 861986 by 45
Our goal is to divide 861986 by 45.

Let's proceed to step 1:
8 divided by 45 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 45

On to step 2:
The number 45 fits into 86 1 times, leaving a remainder of 41.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 45 from 86 to get 41.
Grab the next digit (1) from the dividend, add it to 41, then carry on: 411 / 45

Step 3:
When dividing 411 by 45, we get 9 with a remainder of 6.
The next digit of our result is 9. 
Result so far: 19.0
Subtract 405 from 411 to get 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 45

Advancing to step 4:
69 divided by 45 is 1 with a remainder of 24.
The number 1 becomes the next digit in our result. 
Result so far: 191.0
Deduct 45 from 69 and we're left with 24.
Take the next digit (8) from the dividend and append it to 24, then repeat: 248 / 45

Moving on to step 5:
248 divided by 45 is 5 with a remainder of 23.
The next digit of our result is 5. 
Result so far: 1915.0
The remainder is 23 after subtracting 225 from 248.
Take the next digit (6) from the dividend and append it to 23, then repeat: 236 / 45

Moving on to step 6:
The number 45 fits into 236 5 times, leaving a remainder of 11.
The number 5 becomes the next digit in our result. 
Result so far: 19155.0
The remainder is 11 after subtracting 225 from 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
The number 45 fits into 110 2 times, leaving a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 19155.2
Deduct 90 from 110 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
The number 45 fits into 200 4 times, leaving a remainder of 20.
Write down 4 as next digit of the result. 
Result so far: 19155.24
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
45 can be fit into 200 4 times, resulting in a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 19155.244
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 19155.244 and a remainder of 0.002.