68158 ÷ 20 
We want to divide 68158 by 20.

Going ahead to step 1:
The number 20 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 20

Step 2:
20 can be fit into 68 3 times, resulting in a remainder of 8.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 60 from 68 and we're left with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 20

Going ahead to step 3:
When dividing 81 by 20, we get 4 with a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 34.0
Subtract 80 from 81 to get 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 20

Moving on to step 4:
20 can be fit into 15 0 times, resulting in a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 340.0
Subtracting 0 from 15 leaves us with 15.
Take the next digit (8) from the dividend and append it to 15, then repeat: 158 / 20

Step 5:
When dividing 158 by 20, we get 7 with a remainder of 18.
The number 7 becomes the next digit in our result. 
Result so far: 3407.0
The remainder is 18 after subtracting 140 from 158.
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 6:
20 goes into 180 9 times with a remainder of 0.
The next digit of our result is 9. 
Result so far: 3407.9
If we subtract 180 from 180, we 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.

On to step 7:
If we divide 0 by 20, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 3407.9
The remainder is 0 after subtracting 0 from 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.
Put 0 as the next digit of the answer. 
Result so far: 3407.9
Subtract 0 from 0 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.

The final outcome is 3407.9, with a leftover of 0.0.