199246 ÷ 90 
We want to figure out the number of times 199246 can be divided by 90.

On to step 1:
1 divided by 90 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
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:
The number 90 fits into 19 0 times, leaving a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 19, we end up with 19.
Grab the next digit (9) from the dividend, add it to 19, then carry on: 199 / 90

Moving on to step 3:
199 divided by 90 is 2 with a remainder of 19.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 180 from 199, we get 19.
Bring next digit (2) of the dividend behind the 19 and repeat the process: 192 / 90

Advancing to step 4:
The number 90 fits into 192 2 times, leaving a remainder of 12.
The next digit of our result is 2. 
Result so far: 22.0
If we subtract 180 from 192, we get 12.
Fetch the next digit (4) from the dividend, attach it to 12 and continue: 124 / 90

Going ahead to step 5:
124 divided by 90 is 1 with a remainder of 34.
Record the quotient 1 as the next digit in the result. 
Result so far: 221.0
Subtract 90 from 124 to get 34.
Grab the next digit (6) from the dividend, add it to 34, then carry on: 346 / 90

Moving on to step 6:
The number 90 fits into 346 3 times, leaving a remainder of 76.
Use 3 as the next digit of our solution. 
Result so far: 2213.0
The remainder is 76 after subtracting 270 from 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 7:
When dividing 760 by 90, we get 8 with a remainder of 40.
Put 8 as the next digit of the answer. 
Result so far: 2213.8
Subtracting 720 from 760 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 8:
If we divide 400 by 90, we get 4 and a remainder of 40.
The next digit of our result is 4. 
Result so far: 2213.84
If we subtract 360 from 400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 9:
90 goes into 400 4 times with a remainder of 40.
Put 4 as the next digit of the answer. 
Result so far: 2213.844
Deduct 360 from 400 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

After the division, we end up with 2213.844 and a remainder of 0.004.