145590 ÷ 20 
We want to divide 145590 by 20.

Moving on to step 1:
20 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 20

Advancing to step 2:
14 divided by 20 is 0 with a remainder of 14.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 14, we end up with 14.
Bring next digit (5) of the dividend behind the 14 and repeat the process: 145 / 20

Moving on to step 3:
The number 20 fits into 145 7 times, leaving a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 140 away from 145, we end up with 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 20

Going ahead to step 4:
20 goes into 55 2 times with a remainder of 15.
Record the quotient 2 as the next digit in the result. 
Result so far: 72.0
Subtracting 40 from 55 leaves us with 15.
Include the next digit (9) from the dividend after 15, then repeat: 159 / 20

Going ahead to step 5:
20 can be fit into 159 7 times, resulting in a remainder of 19.
Write down 7 as next digit of the result. 
Result so far: 727.0
The remainder is 19 after subtracting 140 from 159.
Append the next digit (0) from the dividend to 19 and continue with: 190 / 20

Going ahead to step 6:
190 divided by 20 is 9 with a remainder of 10.
Write down 9 as next digit of the result. 
Result so far: 7279.0
If we take 180 away from 190, we end up with 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 7:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 7279.5
Deduct 100 from 100 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 8:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 7279.5
If we take 0 away from 0, we end up 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:
20 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 7279.5
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.

The quotient of the division is 7279.5, and the remainder is 0.0.