342210 ÷ 99 
We want to divide 342210 by 99.

Advancing to step 1:
The number 99 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Take the next digit (4) from the dividend and append it to 3, then repeat: 34 / 99

On to step 2:
If we divide 34 by 99, we get 0 and a remainder of 34.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 34 after subtracting 0 from 34.
Bring next digit (2) of the dividend behind the 34 and repeat the process: 342 / 99

Moving on to step 3:
99 can be fit into 342 3 times, resulting in a remainder of 45.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 297 from 342 and we're left with 45.
Take the next digit (2) from the dividend and append it to 45, then repeat: 452 / 99

Moving on to step 4:
452 divided by 99 is 4 with a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 34.0
Deduct 396 from 452 and we're left with 56.
Take the next digit (1) from the dividend and append it to 56, then repeat: 561 / 99

Going ahead to step 5:
If we divide 561 by 99, we get 5 and a remainder of 66.
The next digit of our result is 5. 
Result so far: 345.0
If we subtract 495 from 561, we get 66.
Bring next digit (0) of the dividend behind the 66 and repeat the process: 660 / 99

Moving on to step 6:
660 divided by 99 is 6 with a remainder of 66.
Put 6 as the next digit of the answer. 
Result so far: 3456.0
Deduct 594 from 660 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 7:
When dividing 660 by 99, we get 6 with a remainder of 66.
The number 6 becomes the next digit in our result. 
Result so far: 3456.6
Subtract 594 from 660 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 8:
99 can be fit into 660 6 times, resulting in a remainder of 66.
The next digit of our result is 6. 
Result so far: 3456.66
If we subtract 594 from 660, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

The quotient of the division is 3456.66, and the remainder is 0.066.