90859445 ÷ 860 
Let's see how many times 860 fits into 90859445.

On to step 1:
When dividing 9 by 860, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 860

Advancing to step 2:
If we divide 90 by 860, we get 0 and a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 90 leaves us with 90.
Bring next digit (8) of the dividend behind the 90 and repeat the process: 908 / 860

Moving on to step 3:
860 goes into 908 1 times with a remainder of 48.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 860 from 908 leaves us with 48.
Grab the next digit (5) from the dividend, add it to 48, then carry on: 485 / 860

Going ahead to step 4:
485 divided by 860 is 0 with a remainder of 485.
The next digit of our result is 0. 
Result so far: 10.0
Deduct 0 from 485 and we're left with 485.
Take the next digit (9) from the dividend and append it to 485, then repeat: 4859 / 860

Let's proceed to step 5:
If we divide 4859 by 860, we get 5 and a remainder of 559.
Put 5 as the next digit of the answer. 
Result so far: 105.0
If we take 4300 away from 4859, we end up with 559.
Fetch the next digit (4) from the dividend, attach it to 559 and continue: 5594 / 860

On to step 6:
The number 860 fits into 5594 6 times, leaving a remainder of 434.
Use 6 as the next digit of our solution. 
Result so far: 1056.0
Deduct 5160 from 5594 and we're left with 434.
Include the next digit (4) from the dividend after 434, then repeat: 4344 / 860

On to step 7:
The number 860 fits into 4344 5 times, leaving a remainder of 44.
The number 5 becomes the next digit in our result. 
Result so far: 10565.0
If we take 4300 away from 4344, we end up with 44.
Include the next digit (5) from the dividend after 44, then repeat: 445 / 860

On to step 8:
445 divided by 860 is 0 with a remainder of 445.
The next digit of our result is 0. 
Result so far: 105650.0
If we subtract 0 from 445, we get 445.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

Let's proceed to step 9:
4450 divided by 860 is 5 with a remainder of 150.
The next digit of our result is 5. 
Result so far: 105650.5
Subtract 4300 from 4450 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Moving on to step 10:
860 can be fit into 1500 1 times, resulting in a remainder of 640.
Record the quotient 1 as the next digit in the result. 
Result so far: 105650.51
Subtract 860 from 1500 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.

Let's proceed to step 11:
If we divide 6400 by 860, we get 7 and a remainder of 380.
The next digit of our result is 7. 
Result so far: 105650.517
Subtracting 6020 from 6400 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Going ahead to step 12:
860 can be fit into 3800 4 times, resulting in a remainder of 360.
Write down 4 as next digit of the result. 
Result so far: 105650.5174
Subtract 3440 from 3800 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.

Step 13:
860 can be fit into 3600 4 times, resulting in a remainder of 160.
The number 4 becomes the next digit in our result. 
Result so far: 105650.51744
Subtract 3440 from 3600 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

After the division, we end up with 105650.51744 and a remainder of 0.00016.