We're dividing 138948 by 20 
We want to figure out the number of times 138948 can be divided by 20.

Going ahead to step 1:
If we divide 1 by 20, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 20

Advancing to step 2:
The number 20 fits into 13 0 times, leaving a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 13 leaves us with 13.
Bring next digit (8) of the dividend behind the 13 and repeat the process: 138 / 20

Step 3:
20 goes into 138 6 times with a remainder of 18.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 120 from 138 leaves us with 18.
Fetch the next digit (9) from the dividend, attach it to 18 and continue: 189 / 20

Advancing to step 4:
If we divide 189 by 20, we get 9 and a remainder of 9.
The number 9 becomes the next digit in our result. 
Result so far: 69.0
Subtract 180 from 189 to get 9.
Append the next digit (4) from the dividend to 9 and continue with: 94 / 20

Going ahead to step 5:
If we divide 94 by 20, we get 4 and a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 694.0
Deduct 80 from 94 and we're left with 14.
Fetch the next digit (8) from the dividend, attach it to 14 and continue: 148 / 20

Advancing to step 6:
If we divide 148 by 20, we get 7 and a remainder of 8.
Record the quotient 7 as the next digit in the result. 
Result so far: 6947.0
Subtracting 140 from 148 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 7:
80 divided by 20 is 4 with a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 6947.4
Deduct 80 from 80 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.

Step 8:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 6947.4
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.

Step 9:
0 divided by 20 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 6947.4
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.

Our division results in 6947.4 with a remaining 0.0.