We look at the division of 123743 by 20 
We want to divide 123743 by 20.

Going ahead to step 1:
The number 20 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 20

Advancing to step 2:
If we divide 12 by 20, we get 0 and a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 20

Let's proceed to step 3:
20 can be fit into 123 6 times, resulting in a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtracting 120 from 123 leaves us with 3.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 20

Going ahead to step 4:
The number 20 fits into 37 1 times, leaving a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 61.0
The remainder is 17 after subtracting 20 from 37.
Grab the next digit (4) from the dividend, add it to 17, then carry on: 174 / 20

Going ahead to step 5:
174 divided by 20 is 8 with a remainder of 14.
Put 8 as the next digit of the answer. 
Result so far: 618.0
The remainder is 14 after subtracting 160 from 174.
Include the next digit (3) from the dividend after 14, then repeat: 143 / 20

Advancing to step 6:
143 divided by 20 is 7 with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 6187.0
If we take 140 away from 143, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
If we divide 30 by 20, we get 1 and a remainder of 10.
The next digit of our result is 1. 
Result so far: 6187.1
Subtract 20 from 30 to 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.

Moving on to step 8:
20 goes into 100 5 times with a remainder of 0.
The next digit of our result is 5. 
Result so far: 6187.15
Subtracting 100 from 100 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.

Moving on to step 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 6187.15
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.

Going ahead to step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 6187.15
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.

The final result is 6187.15 with a remainder of 0.0.