We divide 145820 by 90
Let's see how many times 90 fits into 145820.

Going ahead to step 1:
90 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 90

Step 2:
90 can be fit into 14 0 times, resulting in a remainder of 14.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 14 leaves us with 14.
Grab the next digit (5) from the dividend, add it to 14, then carry on: 145 / 90

Let's proceed to step 3:
When dividing 145 by 90, we get 1 with a remainder of 55.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 90 from 145 and we're left with 55.
Fetch the next digit (8) from the dividend, attach it to 55 and continue: 558 / 90

Moving on to step 4:
The number 90 fits into 558 6 times, leaving a remainder of 18.
Write down 6 as next digit of the result. 
Result so far: 16.0
Subtracting 540 from 558 leaves us with 18.
Take the next digit (2) from the dividend and append it to 18, then repeat: 182 / 90

Going ahead to step 5:
The number 90 fits into 182 2 times, leaving a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 162.0
If we take 180 away from 182, we end up with 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 90

Advancing to step 6:
If we divide 20 by 90, we get 0 and a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 1620.0
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 7:
The number 90 fits into 200 2 times, leaving a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 1620.2
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
90 can be fit into 200 2 times, resulting in a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 1620.22
If we take 180 away from 200, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 1620.22, with a leftover of 0.02.