73644315 ÷ 642 
We're looking to find how many times 642 goes into 73644315.

Let's proceed to step 1:
The number 642 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 642

Moving on to step 2:
When dividing 73 by 642, we get 0 with a remainder of 73.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 73 leaves us with 73.
Fetch the next digit (6) from the dividend, attach it to 73 and continue: 736 / 642

Going ahead to step 3:
642 can be fit into 736 1 times, resulting in a remainder of 94.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 642 from 736, we get 94.
Grab the next digit (4) from the dividend, add it to 94, then carry on: 944 / 642

On to step 4:
When dividing 944 by 642, we get 1 with a remainder of 302.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Subtracting 642 from 944 leaves us with 302.
Take the next digit (4) from the dividend and append it to 302, then repeat: 3024 / 642

Going ahead to step 5:
642 can be fit into 3024 4 times, resulting in a remainder of 456.
Use 4 as the next digit of our solution. 
Result so far: 114.0
If we subtract 2568 from 3024, we get 456.
Grab the next digit (3) from the dividend, add it to 456, then carry on: 4563 / 642

Moving on to step 6:
If we divide 4563 by 642, we get 7 and a remainder of 69.
Write down 7 as next digit of the result. 
Result so far: 1147.0
If we take 4494 away from 4563, we end up with 69.
Bring next digit (1) of the dividend behind the 69 and repeat the process: 691 / 642

Going ahead to step 7:
642 can be fit into 691 1 times, resulting in a remainder of 49.
The next digit of our result is 1. 
Result so far: 11471.0
If we take 642 away from 691, we end up with 49.
Append the next digit (5) from the dividend to 49 and continue with: 495 / 642

Let's proceed to step 8:
When dividing 495 by 642, we get 0 with a remainder of 495.
The number 0 becomes the next digit in our result. 
Result so far: 114710.0
Subtracting 0 from 495 leaves us with 495.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4950, and continue the process.

Step 9:
642 goes into 4950 7 times with a remainder of 456.
Write down 7 as next digit of the result. 
Result so far: 114710.7
Subtracting 4494 from 4950 leaves us with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Moving on to step 10:
4560 divided by 642 is 7 with a remainder of 66.
Record the quotient 7 as the next digit in the result. 
Result so far: 114710.77
Deduct 4494 from 4560 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

After the division, we end up with 114710.77 and a remainder of 0.066.