75066644 divided by 640 
Our goal is to divide 75066644 by 640.

Advancing to step 1:
7 divided by 640 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 640

Moving on to step 2:
75 divided by 640 is 0 with a remainder of 75.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 75, we end up with 75.
Bring next digit (0) of the dividend behind the 75 and repeat the process: 750 / 640

Let's proceed to step 3:
When dividing 750 by 640, we get 1 with a remainder of 110.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 640 from 750, we get 110.
Bring next digit (6) of the dividend behind the 110 and repeat the process: 1106 / 640

Step 4:
When dividing 1106 by 640, we get 1 with a remainder of 466.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Subtract 640 from 1106 to get 466.
Grab the next digit (6) from the dividend, add it to 466, then carry on: 4666 / 640

On to step 5:
640 can be fit into 4666 7 times, resulting in a remainder of 186.
Use 7 as the next digit of our solution. 
Result so far: 117.0
Subtracting 4480 from 4666 leaves us with 186.
Bring next digit (6) of the dividend behind the 186 and repeat the process: 1866 / 640

On to step 6:
640 goes into 1866 2 times with a remainder of 586.
Use 2 as the next digit of our solution. 
Result so far: 1172.0
Subtract 1280 from 1866 to get 586.
Append the next digit (4) from the dividend to 586 and continue with: 5864 / 640

Moving on to step 7:
When dividing 5864 by 640, we get 9 with a remainder of 104.
Record the quotient 9 as the next digit in the result. 
Result so far: 11729.0
If we take 5760 away from 5864, we end up with 104.
Include the next digit (4) from the dividend after 104, then repeat: 1044 / 640

Let's proceed to step 8:
The number 640 fits into 1044 1 times, leaving a remainder of 404.
Use 1 as the next digit of our solution. 
Result so far: 117291.0
If we subtract 640 from 1044, we get 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

Step 9:
640 can be fit into 4040 6 times, resulting in a remainder of 200.
Use 6 as the next digit of our solution. 
Result so far: 117291.6
The remainder is 200 after subtracting 3840 from 4040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 10:
2000 divided by 640 is 3 with a remainder of 80.
The number 3 becomes the next digit in our result. 
Result so far: 117291.63
Subtracting 1920 from 2000 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 11:
When dividing 800 by 640, we get 1 with a remainder of 160.
The number 1 becomes the next digit in our result. 
Result so far: 117291.631
Deduct 640 from 800 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 12:
If we divide 1600 by 640, we get 2 and a remainder of 320.
Write down 2 as next digit of the result. 
Result so far: 117291.6312
Subtracting 1280 from 1600 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 13:
The number 640 fits into 3200 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 117291.63125
The remainder is 0 after subtracting 3200 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 14:
640 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 117291.63125
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 15:
The number 640 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 117291.63125
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 117291.63125, with a leftover of 0.0.