121233 ÷ 84 
Our goal is to divide 121233 by 84.

Advancing to step 1:
1 divided by 84 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.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 84

On to step 2:
When dividing 12 by 84, we get 0 with a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 84

Going ahead to step 3:
When dividing 121 by 84, we get 1 with a remainder of 37.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 37 after subtracting 84 from 121.
Take the next digit (2) from the dividend and append it to 37, then repeat: 372 / 84

Moving on to step 4:
372 divided by 84 is 4 with a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 14.0
If we take 336 away from 372, we end up with 36.
Append the next digit (3) from the dividend to 36 and continue with: 363 / 84

Step 5:
If we divide 363 by 84, we get 4 and a remainder of 27.
Use 4 as the next digit of our solution. 
Result so far: 144.0
Subtracting 336 from 363 leaves us with 27.
Fetch the next digit (3) from the dividend, attach it to 27 and continue: 273 / 84

Advancing to step 6:
84 goes into 273 3 times with a remainder of 21.
Write down 3 as next digit of the result. 
Result so far: 1443.0
Deduct 252 from 273 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 7:
When dividing 210 by 84, we get 2 with a remainder of 42.
Write down 2 as next digit of the result. 
Result so far: 1443.2
Subtracting 168 from 210 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 8:
84 can be fit into 420 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 1443.25
Deduct 420 from 420 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 9:
If we divide 0 by 84, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1443.25
Deduct 0 from 0 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.

Going ahead to step 10:
84 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1443.25
The remainder is 0 after subtracting 0 from 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 final outcome is 1443.25, with a leftover of 0.0.