858970 divided by 20 
Let's see how many times 20 fits into 858970.

Step 1:
20 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 20

Let's proceed to step 2:
The number 20 fits into 85 4 times, leaving a remainder of 5.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 80 away from 85, we end up with 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 20

Step 3:
The number 20 fits into 58 2 times, leaving a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 42.0
Deduct 40 from 58 and we're left with 18.
Fetch the next digit (9) from the dividend, attach it to 18 and continue: 189 / 20

Let's proceed to step 4:
189 divided by 20 is 9 with a remainder of 9.
The number 9 becomes the next digit in our result. 
Result so far: 429.0
If we take 180 away from 189, we end up with 9.
Take the next digit (7) from the dividend and append it to 9, then repeat: 97 / 20

Moving on to step 5:
20 can be fit into 97 4 times, resulting in a remainder of 17.
Put 4 as the next digit of the answer. 
Result so far: 4294.0
If we take 80 away from 97, we end up with 17.
Grab the next digit (0) from the dividend, add it to 17, then carry on: 170 / 20

Advancing to step 6:
170 divided by 20 is 8 with a remainder of 10.
Write down 8 as next digit of the result. 
Result so far: 42948.0
If we subtract 160 from 170, 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 7:
20 goes into 100 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 42948.5
Subtract 100 from 100 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
0 divided by 20 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 42948.5
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
0 divided by 20 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 42948.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 42948.5 with a balance of 0.0.