We're dividing 646643 by 98 
Let's see how many times 98 fits into 646643.

Going ahead to step 1:
98 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 98

Let's proceed to step 2:
The number 98 fits into 64 0 times, leaving a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Grab the next digit (6) from the dividend, add it to 64, then carry on: 646 / 98

On to step 3:
98 goes into 646 6 times with a remainder of 58.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtract 588 from 646 to get 58.
Bring next digit (6) of the dividend behind the 58 and repeat the process: 586 / 98

Step 4:
The number 98 fits into 586 5 times, leaving a remainder of 96.
Record the quotient 5 as the next digit in the result. 
Result so far: 65.0
If we subtract 490 from 586, we get 96.
Include the next digit (4) from the dividend after 96, then repeat: 964 / 98

Step 5:
98 can be fit into 964 9 times, resulting in a remainder of 82.
Put 9 as the next digit of the answer. 
Result so far: 659.0
Deduct 882 from 964 and we're left with 82.
Take the next digit (3) from the dividend and append it to 82, then repeat: 823 / 98

Step 6:
98 can be fit into 823 8 times, resulting in a remainder of 39.
The number 8 becomes the next digit in our result. 
Result so far: 6598.0
If we subtract 784 from 823, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 7:
390 divided by 98 is 3 with a remainder of 96.
Write down 3 as next digit of the result. 
Result so far: 6598.3
Subtract 294 from 390 to get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 8:
If we divide 960 by 98, we get 9 and a remainder of 78.
Record the quotient 9 as the next digit in the result. 
Result so far: 6598.39
Deduct 882 from 960 and we're left with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 9:
When dividing 780 by 98, we get 7 with a remainder of 94.
The next digit of our result is 7. 
Result so far: 6598.397
Subtract 686 from 780 to get 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Moving on to step 10:
If we divide 940 by 98, we get 9 and a remainder of 58.
Put 9 as the next digit of the answer. 
Result so far: 6598.3979
If we take 882 away from 940, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 11:
580 divided by 98 is 5 with a remainder of 90.
Write down 5 as next digit of the result. 
Result so far: 6598.39795
Subtract 490 from 580 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Going ahead to step 12:
The number 98 fits into 900 9 times, leaving a remainder of 18.
Use 9 as the next digit of our solution. 
Result so far: 6598.397959
If we subtract 882 from 900, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 13:
If we divide 180 by 98, we get 1 and a remainder of 82.
Put 1 as the next digit of the answer. 
Result so far: 6598.3979591
The remainder is 82 after subtracting 98 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 14:
The number 98 fits into 820 8 times, leaving a remainder of 36.
Write down 8 as next digit of the result. 
Result so far: 6598.39795918
Subtract 784 from 820 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final outcome is 6598.39795918, with a leftover of 3.6e-08.