Let's divide 858603 by 39
We're looking to find how many times 39 goes into 858603.

Moving on to step 1:
39 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (5) from the dividend, attach it to 8 and continue: 85 / 39

Let's proceed to step 2:
If we divide 85 by 39, we get 2 and a remainder of 7.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 78 from 85 and we're left with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 39

Moving on to step 3:
78 divided by 39 is 2 with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 22.0
Subtracting 78 from 78 leaves us with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 39

Moving on to step 4:
39 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 220.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 39

Advancing to step 5:
39 can be fit into 60 1 times, resulting in a remainder of 21.
The number 1 becomes the next digit in our result. 
Result so far: 2201.0
The remainder is 21 after subtracting 39 from 60.
Include the next digit (3) from the dividend after 21, then repeat: 213 / 39

Going ahead to step 6:
If we divide 213 by 39, we get 5 and a remainder of 18.
Put 5 as the next digit of the answer. 
Result so far: 22015.0
The remainder is 18 after subtracting 195 from 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 7:
The number 39 fits into 180 4 times, leaving a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 22015.4
Deduct 156 from 180 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 8:
When dividing 240 by 39, we get 6 with a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 22015.46
Deduct 234 from 240 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 9:
The number 39 fits into 60 1 times, leaving a remainder of 21.
Record the quotient 1 as the next digit in the result. 
Result so far: 22015.461
If we take 39 away from 60, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 10:
39 can be fit into 210 5 times, resulting in a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 22015.4615
Deduct 195 from 210 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 11:
When dividing 150 by 39, we get 3 with a remainder of 33.
Use 3 as the next digit of our solution. 
Result so far: 22015.46153
If we subtract 117 from 150, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 12:
If we divide 330 by 39, we get 8 and a remainder of 18.
Write down 8 as next digit of the result. 
Result so far: 22015.461538
Subtracting 312 from 330 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 13:
The number 39 fits into 180 4 times, leaving a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 22015.4615384
The remainder is 24 after subtracting 156 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 14:
If we divide 240 by 39, we get 6 and a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 22015.46153846
Deduct 234 from 240 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final outcome is 22015.46153846, with a leftover of 6e-09.