We look at the division of 193806 by 90 
We want to figure out the number of times 193806 can be divided by 90.

Let's proceed to step 1:
When dividing 1 by 90, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 90

Moving on to step 2:
90 goes into 19 0 times with a remainder of 19.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 19, we get 19.
Bring next digit (3) of the dividend behind the 19 and repeat the process: 193 / 90

Advancing to step 3:
90 goes into 193 2 times with a remainder of 13.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 180 from 193, we get 13.
Fetch the next digit (8) from the dividend, attach it to 13 and continue: 138 / 90

Advancing to step 4:
When dividing 138 by 90, we get 1 with a remainder of 48.
Use 1 as the next digit of our solution. 
Result so far: 21.0
Subtract 90 from 138 to get 48.
Include the next digit (0) from the dividend after 48, then repeat: 480 / 90

On to step 5:
90 goes into 480 5 times with a remainder of 30.
The next digit of our result is 5. 
Result so far: 215.0
Deduct 450 from 480 and we're left with 30.
Take the next digit (6) from the dividend and append it to 30, then repeat: 306 / 90

On to step 6:
306 divided by 90 is 3 with a remainder of 36.
The number 3 becomes the next digit in our result. 
Result so far: 2153.0
Subtract 270 from 306 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 7:
When dividing 360 by 90, we get 4 with a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 2153.4
Deduct 360 from 360 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.

Advancing to step 8:
The number 90 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 2153.4
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.

Let's proceed to step 9:
The number 90 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 2153.4
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.

Our division results in 2153.4 with a remaining 0.0.