858430 ÷ 39 
Our goal is to divide 858430 by 39.

On to step 1:
39 can be fit into 8 0 times, resulting in 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.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 39

Moving on to step 2:
When dividing 85 by 39, we get 2 with a remainder of 7.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 78 from 85 to get 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 39

Let's proceed to step 3:
If we divide 78 by 39, we get 2 and a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
If we subtract 78 from 78, we get 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 39

Step 4:
When dividing 4 by 39, we get 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 220.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 39

Moving on to step 5:
39 can be fit into 43 1 times, resulting in a remainder of 4.
Record the quotient 1 as the next digit in the result. 
Result so far: 2201.0
Subtract 39 from 43 to get 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 39

Moving on to step 6:
When dividing 40 by 39, we get 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 22011.0
Deduct 39 from 40 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
39 goes into 10 0 times with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 22011.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
39 goes into 100 2 times with a remainder of 22.
The number 2 becomes the next digit in our result. 
Result so far: 22011.02
Subtracting 78 from 100 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 9:
The number 39 fits into 220 5 times, leaving a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 22011.025
Subtract 195 from 220 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 10:
39 goes into 250 6 times with a remainder of 16.
The next digit of our result is 6. 
Result so far: 22011.0256
If we subtract 234 from 250, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 11:
If we divide 160 by 39, we get 4 and a remainder of 4.
The next digit of our result is 4. 
Result so far: 22011.02564
Deduct 156 from 160 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 12:
39 can be fit into 40 1 times, resulting in a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 22011.025641
If we take 39 away from 40, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 13:
39 goes into 10 0 times with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 22011.025641
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 14:
When dividing 100 by 39, we get 2 with a remainder of 22.
Put 2 as the next digit of the answer. 
Result so far: 22011.02564102
Subtract 78 from 100 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The final result is 22011.02564102 with a remainder of 2.2e-08.