We look at the division of 87760298 by 644 
We want to divide 87760298 by 644.

Let's proceed to step 1:
644 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 644

Let's proceed to step 2:
If we divide 87 by 644, we get 0 and a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 87, we get 87.
Grab the next digit (7) from the dividend, add it to 87, then carry on: 877 / 644

Moving on to step 3:
If we divide 877 by 644, we get 1 and a remainder of 233.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 233 after subtracting 644 from 877.
Include the next digit (6) from the dividend after 233, then repeat: 2336 / 644

On to step 4:
644 goes into 2336 3 times with a remainder of 404.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtract 1932 from 2336 to get 404.
Grab the next digit (0) from the dividend, add it to 404, then carry on: 4040 / 644

Advancing to step 5:
The number 644 fits into 4040 6 times, leaving a remainder of 176.
Write down 6 as next digit of the result. 
Result so far: 136.0
Subtract 3864 from 4040 to get 176.
Fetch the next digit (2) from the dividend, attach it to 176 and continue: 1762 / 644

Going ahead to step 6:
When dividing 1762 by 644, we get 2 with a remainder of 474.
The number 2 becomes the next digit in our result. 
Result so far: 1362.0
Subtract 1288 from 1762 to get 474.
Include the next digit (9) from the dividend after 474, then repeat: 4749 / 644

Step 7:
644 goes into 4749 7 times with a remainder of 241.
Put 7 as the next digit of the answer. 
Result so far: 13627.0
Subtract 4508 from 4749 to get 241.
Bring next digit (8) of the dividend behind the 241 and repeat the process: 2418 / 644

Advancing to step 8:
644 can be fit into 2418 3 times, resulting in a remainder of 486.
Record the quotient 3 as the next digit in the result. 
Result so far: 136273.0
Subtracting 1932 from 2418 leaves us with 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

Advancing to step 9:
4860 divided by 644 is 7 with a remainder of 352.
The next digit of our result is 7. 
Result so far: 136273.7
Subtract 4508 from 4860 to get 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Step 10:
644 goes into 3520 5 times with a remainder of 300.
The number 5 becomes the next digit in our result. 
Result so far: 136273.75
If we subtract 3220 from 3520, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Step 11:
644 can be fit into 3000 4 times, resulting in a remainder of 424.
Put 4 as the next digit of the answer. 
Result so far: 136273.754
If we subtract 2576 from 3000, we get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

On to step 12:
644 goes into 4240 6 times with a remainder of 376.
Put 6 as the next digit of the answer. 
Result so far: 136273.7546
If we take 3864 away from 4240, we end up with 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

Going ahead to step 13:
The number 644 fits into 3760 5 times, leaving a remainder of 540.
Use 5 as the next digit of our solution. 
Result so far: 136273.75465
If we subtract 3220 from 3760, we get 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Advancing to step 14:
When dividing 5400 by 644, we get 8 with a remainder of 248.
Use 8 as the next digit of our solution. 
Result so far: 136273.754658
Deduct 5152 from 5400 and we're left with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Moving on to step 15:
If we divide 2480 by 644, we get 3 and a remainder of 548.
Record the quotient 3 as the next digit in the result. 
Result so far: 136273.7546583
If we take 1932 away from 2480, we end up with 548.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5480, and continue the process.

Step 16:
When dividing 5480 by 644, we get 8 with a remainder of 328.
Record the quotient 8 as the next digit in the result. 
Result so far: 136273.75465838
Subtract 5152 from 5480 to get 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Our division results in 136273.75465838 with a remaining 3.28e-07.