74388983 ÷ 648 
Our goal is to divide 74388983 by 648.

Advancing to step 1:
When dividing 7 by 648, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 648

On to step 2:
648 goes into 74 0 times with a remainder of 74.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 74 and we're left with 74.
Bring next digit (3) of the dividend behind the 74 and repeat the process: 743 / 648

Going ahead to step 3:
648 can be fit into 743 1 times, resulting in a remainder of 95.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 95 after subtracting 648 from 743.
Take the next digit (8) from the dividend and append it to 95, then repeat: 958 / 648

Moving on to step 4:
958 divided by 648 is 1 with a remainder of 310.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
If we take 648 away from 958, we end up with 310.
Include the next digit (8) from the dividend after 310, then repeat: 3108 / 648

Advancing to step 5:
3108 divided by 648 is 4 with a remainder of 516.
Put 4 as the next digit of the answer. 
Result so far: 114.0
If we take 2592 away from 3108, we end up with 516.
Fetch the next digit (9) from the dividend, attach it to 516 and continue: 5169 / 648

Let's proceed to step 6:
The number 648 fits into 5169 7 times, leaving a remainder of 633.
The next digit of our result is 7. 
Result so far: 1147.0
The remainder is 633 after subtracting 4536 from 5169.
Append the next digit (8) from the dividend to 633 and continue with: 6338 / 648

Advancing to step 7:
When dividing 6338 by 648, we get 9 with a remainder of 506.
Put 9 as the next digit of the answer. 
Result so far: 11479.0
Subtracting 5832 from 6338 leaves us with 506.
Append the next digit (3) from the dividend to 506 and continue with: 5063 / 648

Going ahead to step 8:
The number 648 fits into 5063 7 times, leaving a remainder of 527.
Write down 7 as next digit of the result. 
Result so far: 114797.0
If we subtract 4536 from 5063, we get 527.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5270, and continue the process.

Step 9:
When dividing 5270 by 648, we get 8 with a remainder of 86.
The next digit of our result is 8. 
Result so far: 114797.8
The remainder is 86 after subtracting 5184 from 5270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Advancing to step 10:
If we divide 860 by 648, we get 1 and a remainder of 212.
The number 1 becomes the next digit in our result. 
Result so far: 114797.81
If we take 648 away from 860, we end up with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

On to step 11:
The number 648 fits into 2120 3 times, leaving a remainder of 176.
Write down 3 as next digit of the result. 
Result so far: 114797.813
Deduct 1944 from 2120 and we're left with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Step 12:
1760 divided by 648 is 2 with a remainder of 464.
Put 2 as the next digit of the answer. 
Result so far: 114797.8132
Subtracting 1296 from 1760 leaves us with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Moving on to step 13:
When dividing 4640 by 648, we get 7 with a remainder of 104.
The next digit of our result is 7. 
Result so far: 114797.81327
The remainder is 104 after subtracting 4536 from 4640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Advancing to step 14:
1040 divided by 648 is 1 with a remainder of 392.
Record the quotient 1 as the next digit in the result. 
Result so far: 114797.813271
If we subtract 648 from 1040, we get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Step 15:
If we divide 3920 by 648, we get 6 and a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 114797.8132716
Subtracting 3888 from 3920 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 16:
The number 648 fits into 320 0 times, leaving a remainder of 320.
Write down 0 as next digit of the result. 
Result so far: 114797.8132716
The remainder is 320 after subtracting 0 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

The final outcome is 114797.8132716, with a leftover of 3.2e-07.