4200 divided by 98 
Let's see how many times 98 fits into 4200.

Step 1:
98 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 98

Moving on to step 2:
The number 98 fits into 42 0 times, leaving a remainder of 42.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Include the next digit (0) from the dividend after 42, then repeat: 420 / 98

Going ahead to step 3:
The number 98 fits into 420 4 times, leaving a remainder of 28.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 392 from 420 leaves us with 28.
Append the next digit (0) from the dividend to 28 and continue with: 280 / 98

Moving on to step 4:
280 divided by 98 is 2 with a remainder of 84.
The next digit of our result is 2. 
Result so far: 42.0
The remainder is 84 after subtracting 196 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Step 5:
98 can be fit into 840 8 times, resulting in a remainder of 56.
Use 8 as the next digit of our solution. 
Result so far: 42.8
Deduct 784 from 840 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 6:
560 divided by 98 is 5 with a remainder of 70.
Put 5 as the next digit of the answer. 
Result so far: 42.85
Subtract 490 from 560 to 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:
If we divide 700 by 98, we get 7 and a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 42.857
If we take 686 away from 700, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 8:
140 divided by 98 is 1 with a remainder of 42.
Write down 1 as next digit of the result. 
Result so far: 42.8571
Deduct 98 from 140 and we're left 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.

Step 9:
98 goes into 420 4 times with a remainder of 28.
Put 4 as the next digit of the answer. 
Result so far: 42.85714
If we subtract 392 from 420, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 10:
280 divided by 98 is 2 with a remainder of 84.
Put 2 as the next digit of the answer. 
Result so far: 42.857142
Subtracting 196 from 280 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Step 11:
The number 98 fits into 840 8 times, leaving a remainder of 56.
Use 8 as the next digit of our solution. 
Result so far: 42.8571428
If we subtract 784 from 840, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 12:
560 divided by 98 is 5 with a remainder of 70.
The number 5 becomes the next digit in our result. 
Result so far: 42.85714285
If we take 490 away from 560, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

After the division, we end up with 42.85714285 and a remainder of 7e-08.