98270494 ÷ 644 
We want to divide 98270494 by 644.

On to step 1:
644 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 644

Moving on to step 2:
644 can be fit into 98 0 times, resulting in a remainder of 98.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 98 after subtracting 0 from 98.
Include the next digit (2) from the dividend after 98, then repeat: 982 / 644

Let's proceed to step 3:
644 can be fit into 982 1 times, resulting in a remainder of 338.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 338 after subtracting 644 from 982.
Take the next digit (7) from the dividend and append it to 338, then repeat: 3387 / 644

Going ahead to step 4:
When dividing 3387 by 644, we get 5 with a remainder of 167.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Deduct 3220 from 3387 and we're left with 167.
Grab the next digit (0) from the dividend, add it to 167, then carry on: 1670 / 644

On to step 5:
1670 divided by 644 is 2 with a remainder of 382.
Put 2 as the next digit of the answer. 
Result so far: 152.0
Subtract 1288 from 1670 to get 382.
Take the next digit (4) from the dividend and append it to 382, then repeat: 3824 / 644

Let's proceed to step 6:
When dividing 3824 by 644, we get 5 with a remainder of 604.
The next digit of our result is 5. 
Result so far: 1525.0
If we take 3220 away from 3824, we end up with 604.
Bring next digit (9) of the dividend behind the 604 and repeat the process: 6049 / 644

Moving on to step 7:
If we divide 6049 by 644, we get 9 and a remainder of 253.
Record the quotient 9 as the next digit in the result. 
Result so far: 15259.0
If we take 5796 away from 6049, we end up with 253.
Grab the next digit (4) from the dividend, add it to 253, then carry on: 2534 / 644

Step 8:
If we divide 2534 by 644, we get 3 and a remainder of 602.
Use 3 as the next digit of our solution. 
Result so far: 152593.0
If we take 1932 away from 2534, we end up with 602.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6020, and continue the process.

Step 9:
6020 divided by 644 is 9 with a remainder of 224.
Use 9 as the next digit of our solution. 
Result so far: 152593.9
Deduct 5796 from 6020 and we're left with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

On to step 10:
644 goes into 2240 3 times with a remainder of 308.
Write down 3 as next digit of the result. 
Result so far: 152593.93
Subtract 1932 from 2240 to get 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Let's proceed to step 11:
644 can be fit into 3080 4 times, resulting in a remainder of 504.
Put 4 as the next digit of the answer. 
Result so far: 152593.934
Deduct 2576 from 3080 and we're left with 504.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

Advancing to step 12:
644 goes into 5040 7 times with a remainder of 532.
The next digit of our result is 7. 
Result so far: 152593.9347
If we subtract 4508 from 5040, we get 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

Let's proceed to step 13:
644 can be fit into 5320 8 times, resulting in a remainder of 168.
Use 8 as the next digit of our solution. 
Result so far: 152593.93478
Subtract 5152 from 5320 to get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Moving on to step 14:
The number 644 fits into 1680 2 times, leaving a remainder of 392.
Put 2 as the next digit of the answer. 
Result so far: 152593.934782
Subtract 1288 from 1680 to get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

On to step 15:
644 can be fit into 3920 6 times, resulting in a remainder of 56.
Use 6 as the next digit of our solution. 
Result so far: 152593.9347826
Subtracting 3864 from 3920 leaves us 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.

Going ahead to step 16:
When dividing 560 by 644, we get 0 with a remainder of 560.
The next digit of our result is 0. 
Result so far: 152593.9347826
If we take 0 away from 560, we end up with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

In conclusion, the division gives 152593.9347826 with a balance of 5.6e-07.