74340885 ÷ 644 
Our goal is to divide 74340885 by 644.

Step 1:
644 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 644

Going ahead to step 2:
644 goes into 74 0 times with a remainder of 74.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 74 leaves us with 74.
Grab the next digit (3) from the dividend, add it to 74, then carry on: 743 / 644

Going ahead to step 3:
If we divide 743 by 644, we get 1 and a remainder of 99.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 644 from 743 to get 99.
Include the next digit (4) from the dividend after 99, then repeat: 994 / 644

Going ahead to step 4:
The number 644 fits into 994 1 times, leaving a remainder of 350.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
If we take 644 away from 994, we end up with 350.
Bring next digit (0) of the dividend behind the 350 and repeat the process: 3500 / 644

On to step 5:
3500 divided by 644 is 5 with a remainder of 280.
The next digit of our result is 5. 
Result so far: 115.0
Deduct 3220 from 3500 and we're left with 280.
Take the next digit (8) from the dividend and append it to 280, then repeat: 2808 / 644

On to step 6:
2808 divided by 644 is 4 with a remainder of 232.
Put 4 as the next digit of the answer. 
Result so far: 1154.0
If we take 2576 away from 2808, we end up with 232.
Bring next digit (8) of the dividend behind the 232 and repeat the process: 2328 / 644

Let's proceed to step 7:
644 goes into 2328 3 times with a remainder of 396.
Put 3 as the next digit of the answer. 
Result so far: 11543.0
Deduct 1932 from 2328 and we're left with 396.
Fetch the next digit (5) from the dividend, attach it to 396 and continue: 3965 / 644

Step 8:
If we divide 3965 by 644, we get 6 and a remainder of 101.
The next digit of our result is 6. 
Result so far: 115436.0
If we subtract 3864 from 3965, we get 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Advancing to step 9:
644 goes into 1010 1 times with a remainder of 366.
The number 1 becomes the next digit in our result. 
Result so far: 115436.1
If we subtract 644 from 1010, we get 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Advancing to step 10:
When dividing 3660 by 644, we get 5 with a remainder of 440.
The number 5 becomes the next digit in our result. 
Result so far: 115436.15
Subtracting 3220 from 3660 leaves us with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

On to step 11:
644 goes into 4400 6 times with a remainder of 536.
Use 6 as the next digit of our solution. 
Result so far: 115436.156
Subtract 3864 from 4400 to get 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Going ahead to step 12:
The number 644 fits into 5360 8 times, leaving a remainder of 208.
Write down 8 as next digit of the result. 
Result so far: 115436.1568
Subtract 5152 from 5360 to get 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Going ahead to step 13:
The number 644 fits into 2080 3 times, leaving a remainder of 148.
The number 3 becomes the next digit in our result. 
Result so far: 115436.15683
Deduct 1932 from 2080 and we're left with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

On to step 14:
644 goes into 1480 2 times with a remainder of 192.
Put 2 as the next digit of the answer. 
Result so far: 115436.156832
Subtracting 1288 from 1480 leaves us with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Step 15:
1920 divided by 644 is 2 with a remainder of 632.
Write down 2 as next digit of the result. 
Result so far: 115436.1568322
The remainder is 632 after subtracting 1288 from 1920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6320, and continue the process.

Our division results in 115436.1568322 with a remaining 6.32e-06.