98108217 divided by 644 
We want to divide 98108217 by 644.

Going ahead to step 1:
644 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Fetch the next digit (8) from the dividend, attach it to 9 and continue: 98 / 644

Step 2:
The number 644 fits into 98 0 times, leaving a remainder of 98.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 98 leaves us with 98.
Take the next digit (1) from the dividend and append it to 98, then repeat: 981 / 644

Step 3:
644 can be fit into 981 1 times, resulting in a remainder of 337.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 644 from 981 to get 337.
Bring next digit (0) of the dividend behind the 337 and repeat the process: 3370 / 644

Advancing to step 4:
The number 644 fits into 3370 5 times, leaving a remainder of 150.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
Subtract 3220 from 3370 to get 150.
Fetch the next digit (8) from the dividend, attach it to 150 and continue: 1508 / 644

Advancing to step 5:
1508 divided by 644 is 2 with a remainder of 220.
Use 2 as the next digit of our solution. 
Result so far: 152.0
Subtract 1288 from 1508 to get 220.
Include the next digit (2) from the dividend after 220, then repeat: 2202 / 644

Going ahead to step 6:
2202 divided by 644 is 3 with a remainder of 270.
Use 3 as the next digit of our solution. 
Result so far: 1523.0
If we take 1932 away from 2202, we end up with 270.
Take the next digit (1) from the dividend and append it to 270, then repeat: 2701 / 644

Step 7:
644 can be fit into 2701 4 times, resulting in a remainder of 125.
Record the quotient 4 as the next digit in the result. 
Result so far: 15234.0
Deduct 2576 from 2701 and we're left with 125.
Grab the next digit (7) from the dividend, add it to 125, then carry on: 1257 / 644

Going ahead to step 8:
If we divide 1257 by 644, we get 1 and a remainder of 613.
The next digit of our result is 1. 
Result so far: 152341.0
Deduct 644 from 1257 and we're left with 613.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6130, and continue the process.

Step 9:
644 can be fit into 6130 9 times, resulting in a remainder of 334.
Write down 9 as next digit of the result. 
Result so far: 152341.9
If we subtract 5796 from 6130, we get 334.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3340, and continue the process.

On to step 10:
644 goes into 3340 5 times with a remainder of 120.
Put 5 as the next digit of the answer. 
Result so far: 152341.95
Subtracting 3220 from 3340 leaves us with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 11:
644 can be fit into 1200 1 times, resulting in a remainder of 556.
Write down 1 as next digit of the result. 
Result so far: 152341.951
If we take 644 away from 1200, we end up with 556.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

Step 12:
644 goes into 5560 8 times with a remainder of 408.
Record the quotient 8 as the next digit in the result. 
Result so far: 152341.9518
If we subtract 5152 from 5560, we get 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

Let's proceed to step 13:
The number 644 fits into 4080 6 times, leaving a remainder of 216.
The number 6 becomes the next digit in our result. 
Result so far: 152341.95186
The remainder is 216 after subtracting 3864 from 4080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Step 14:
644 goes into 2160 3 times with a remainder of 228.
Write down 3 as next digit of the result. 
Result so far: 152341.951863
Subtracting 1932 from 2160 leaves us with 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Advancing to step 15:
644 goes into 2280 3 times with a remainder of 348.
Use 3 as the next digit of our solution. 
Result so far: 152341.9518633
If we subtract 1932 from 2280, we get 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

In conclusion, the division gives 152341.9518633 with a balance of 3.48e-06.