66827970 divided by 644 
We want to divide 66827970 by 644.

Advancing to step 1:
The number 644 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 644

Advancing to step 2:
When dividing 66 by 644, we get 0 with a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Bring next digit (8) of the dividend behind the 66 and repeat the process: 668 / 644

Let's proceed to step 3:
If we divide 668 by 644, we get 1 and a remainder of 24.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 24 after subtracting 644 from 668.
Include the next digit (2) from the dividend after 24, then repeat: 242 / 644

Let's proceed to step 4:
644 can be fit into 242 0 times, resulting in a remainder of 242.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Deduct 0 from 242 and we're left with 242.
Bring next digit (7) of the dividend behind the 242 and repeat the process: 2427 / 644

Step 5:
644 can be fit into 2427 3 times, resulting in a remainder of 495.
Write down 3 as next digit of the result. 
Result so far: 103.0
If we subtract 1932 from 2427, we get 495.
Include the next digit (9) from the dividend after 495, then repeat: 4959 / 644

Let's proceed to step 6:
644 can be fit into 4959 7 times, resulting in a remainder of 451.
The next digit of our result is 7. 
Result so far: 1037.0
Deduct 4508 from 4959 and we're left with 451.
Append the next digit (7) from the dividend to 451 and continue with: 4517 / 644

Going ahead to step 7:
The number 644 fits into 4517 7 times, leaving a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 10377.0
The remainder is 9 after subtracting 4508 from 4517.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 644

Advancing to step 8:
644 can be fit into 90 0 times, resulting in a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 103770.0
Subtracting 0 from 90 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Let's proceed to step 9:
644 goes into 900 1 times with a remainder of 256.
Write down 1 as next digit of the result. 
Result so far: 103770.1
Deduct 644 from 900 and we're left with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Moving on to step 10:
When dividing 2560 by 644, we get 3 with a remainder of 628.
Put 3 as the next digit of the answer. 
Result so far: 103770.13
If we subtract 1932 from 2560, we get 628.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6280, and continue the process.

Let's proceed to step 11:
When dividing 6280 by 644, we get 9 with a remainder of 484.
The number 9 becomes the next digit in our result. 
Result so far: 103770.139
The remainder is 484 after subtracting 5796 from 6280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4840, and continue the process.

On to step 12:
644 goes into 4840 7 times with a remainder of 332.
Write down 7 as next digit of the result. 
Result so far: 103770.1397
If we subtract 4508 from 4840, we get 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Let's proceed to step 13:
When dividing 3320 by 644, we get 5 with a remainder of 100.
Record the quotient 5 as the next digit in the result. 
Result so far: 103770.13975
If we take 3220 away from 3320, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 14:
644 can be fit into 1000 1 times, resulting in a remainder of 356.
The number 1 becomes the next digit in our result. 
Result so far: 103770.139751
If we take 644 away from 1000, we end up with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Advancing to step 15:
644 goes into 3560 5 times with a remainder of 340.
The number 5 becomes the next digit in our result. 
Result so far: 103770.1397515
Subtract 3220 from 3560 to get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Advancing to step 16:
The number 644 fits into 3400 5 times, leaving a remainder of 180.
Use 5 as the next digit of our solution. 
Result so far: 103770.13975155
If we subtract 3220 from 3400, we get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

The final result is 103770.13975155 with a remainder of 1.8e-07.