66145584 divided by 824 
We want to figure out the number of times 66145584 can be divided by 824.

Step 1:
If we divide 6 by 824, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 824

On to step 2:
When dividing 66 by 824, we get 0 with a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Include the next digit (1) from the dividend after 66, then repeat: 661 / 824

Advancing to step 3:
661 divided by 824 is 0 with a remainder of 661.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 661 and we're left with 661.
Grab the next digit (4) from the dividend, add it to 661, then carry on: 6614 / 824

On to step 4:
6614 divided by 824 is 8 with a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 6592 from 6614 and we're left with 22.
Fetch the next digit (5) from the dividend, attach it to 22 and continue: 225 / 824

Going ahead to step 5:
If we divide 225 by 824, we get 0 and a remainder of 225.
The next digit of our result is 0. 
Result so far: 80.0
Subtract 0 from 225 to get 225.
Take the next digit (5) from the dividend and append it to 225, then repeat: 2255 / 824

Going ahead to step 6:
When dividing 2255 by 824, we get 2 with a remainder of 607.
Use 2 as the next digit of our solution. 
Result so far: 802.0
Subtracting 1648 from 2255 leaves us with 607.
Include the next digit (8) from the dividend after 607, then repeat: 6078 / 824

Advancing to step 7:
If we divide 6078 by 824, we get 7 and a remainder of 310.
The number 7 becomes the next digit in our result. 
Result so far: 8027.0
Subtracting 5768 from 6078 leaves us with 310.
Append the next digit (4) from the dividend to 310 and continue with: 3104 / 824

Moving on to step 8:
824 can be fit into 3104 3 times, resulting in a remainder of 632.
Write down 3 as next digit of the result. 
Result so far: 80273.0
If we take 2472 away from 3104, we end up with 632.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6320, and continue the process.

Step 9:
6320 divided by 824 is 7 with a remainder of 552.
Use 7 as the next digit of our solution. 
Result so far: 80273.7
If we take 5768 away from 6320, we end up with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Advancing to step 10:
824 can be fit into 5520 6 times, resulting in a remainder of 576.
Record the quotient 6 as the next digit in the result. 
Result so far: 80273.76
If we take 4944 away from 5520, we end up with 576.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5760, and continue the process.

Advancing to step 11:
824 goes into 5760 6 times with a remainder of 816.
The number 6 becomes the next digit in our result. 
Result so far: 80273.766
Deduct 4944 from 5760 and we're left with 816.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8160, and continue the process.

The final outcome is 80273.766, with a leftover of 0.0816.