64031734 ÷ 645 
We want to divide 64031734 by 645.

Moving on to step 1:
645 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 645

Going ahead to step 2:
When dividing 64 by 645, we get 0 with a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Grab the next digit (0) from the dividend, add it to 64, then carry on: 640 / 645

Let's proceed to step 3:
When dividing 640 by 645, we get 0 with a remainder of 640.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 640, we get 640.
Take the next digit (3) from the dividend and append it to 640, then repeat: 6403 / 645

Let's proceed to step 4:
6403 divided by 645 is 9 with a remainder of 598.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we subtract 5805 from 6403, we get 598.
Take the next digit (1) from the dividend and append it to 598, then repeat: 5981 / 645

Advancing to step 5:
5981 divided by 645 is 9 with a remainder of 176.
Put 9 as the next digit of the answer. 
Result so far: 99.0
Subtract 5805 from 5981 to get 176.
Fetch the next digit (7) from the dividend, attach it to 176 and continue: 1767 / 645

Advancing to step 6:
645 can be fit into 1767 2 times, resulting in a remainder of 477.
Record the quotient 2 as the next digit in the result. 
Result so far: 992.0
Deduct 1290 from 1767 and we're left with 477.
Take the next digit (3) from the dividend and append it to 477, then repeat: 4773 / 645

Step 7:
645 goes into 4773 7 times with a remainder of 258.
Write down 7 as next digit of the result. 
Result so far: 9927.0
If we subtract 4515 from 4773, we get 258.
Take the next digit (4) from the dividend and append it to 258, then repeat: 2584 / 645

Going ahead to step 8:
When dividing 2584 by 645, we get 4 with a remainder of 4.
The next digit of our result is 4. 
Result so far: 99274.0
Deduct 2580 from 2584 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
The number 645 fits into 40 0 times, leaving a remainder of 40.
The next digit of our result is 0. 
Result so far: 99274.0
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 10:
400 divided by 645 is 0 with a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 99274.0
If we subtract 0 from 400, we get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

The final result is 99274.0 with a remainder of 0.4.