We look at the division of 743146 by 20 
We want to figure out the number of times 743146 can be divided by 20.

Step 1:
The number 20 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 20

Advancing to step 2:
20 goes into 74 3 times with a remainder of 14.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 60 from 74 to get 14.
Append the next digit (3) from the dividend to 14 and continue with: 143 / 20

Moving on to step 3:
The number 20 fits into 143 7 times, leaving a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 37.0
Subtracting 140 from 143 leaves us with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 20

Moving on to step 4:
31 divided by 20 is 1 with a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 371.0
If we subtract 20 from 31, we get 11.
Grab the next digit (4) from the dividend, add it to 11, then carry on: 114 / 20

Going ahead to step 5:
When dividing 114 by 20, we get 5 with a remainder of 14.
Use 5 as the next digit of our solution. 
Result so far: 3715.0
Deduct 100 from 114 and we're left with 14.
Take the next digit (6) from the dividend and append it to 14, then repeat: 146 / 20

On to step 6:
20 goes into 146 7 times with a remainder of 6.
The next digit of our result is 7. 
Result so far: 37157.0
If we subtract 140 from 146, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 7:
60 divided by 20 is 3 with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 37157.3
Deduct 60 from 60 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.

Moving on to step 8:
When dividing 0 by 20, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 37157.3
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.

On to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 37157.3
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.

The final result is 37157.3 with a remainder of 0.0.