356398 ÷ 84 
Our goal is to divide 356398 by 84.

Step 1:
When dividing 3 by 84, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 84

Let's proceed to step 2:
When dividing 35 by 84, we get 0 with a remainder of 35.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 35 and we're left with 35.
Grab the next digit (6) from the dividend, add it to 35, then carry on: 356 / 84

Step 3:
84 goes into 356 4 times with a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 336 from 356 to get 20.
Fetch the next digit (3) from the dividend, attach it to 20 and continue: 203 / 84

On to step 4:
The number 84 fits into 203 2 times, leaving a remainder of 35.
Use 2 as the next digit of our solution. 
Result so far: 42.0
The remainder is 35 after subtracting 168 from 203.
Take the next digit (9) from the dividend and append it to 35, then repeat: 359 / 84

Going ahead to step 5:
The number 84 fits into 359 4 times, leaving a remainder of 23.
Put 4 as the next digit of the answer. 
Result so far: 424.0
The remainder is 23 after subtracting 336 from 359.
Append the next digit (8) from the dividend to 23 and continue with: 238 / 84

Advancing to step 6:
84 can be fit into 238 2 times, resulting in a remainder of 70.
Use 2 as the next digit of our solution. 
Result so far: 4242.0
If we subtract 168 from 238, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 7:
The number 84 fits into 700 8 times, leaving a remainder of 28.
The next digit of our result is 8. 
Result so far: 4242.8
The remainder is 28 after subtracting 672 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 8:
If we divide 280 by 84, we get 3 and a remainder of 28.
The next digit of our result is 3. 
Result so far: 4242.83
The remainder is 28 after subtracting 252 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 9:
If we divide 280 by 84, we get 3 and a remainder of 28.
Put 3 as the next digit of the answer. 
Result so far: 4242.833
If we take 252 away from 280, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The quotient of the division is 4242.833, and the remainder is 0.0028.