39760706 ÷ 645 
We're looking to find how many times 645 goes into 39760706.

On to step 1:
645 can be fit into 3 0 times, resulting in a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 645

On to step 2:
When dividing 39 by 645, we get 0 with a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Include the next digit (7) from the dividend after 39, then repeat: 397 / 645

Moving on to step 3:
645 goes into 397 0 times with a remainder of 397.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 397 after subtracting 0 from 397.
Grab the next digit (6) from the dividend, add it to 397, then carry on: 3976 / 645

Advancing to step 4:
The number 645 fits into 3976 6 times, leaving a remainder of 106.
Write down 6 as next digit of the result. 
Result so far: 6.0
If we take 3870 away from 3976, we end up with 106.
Fetch the next digit (0) from the dividend, attach it to 106 and continue: 1060 / 645

Step 5:
The number 645 fits into 1060 1 times, leaving a remainder of 415.
The number 1 becomes the next digit in our result. 
Result so far: 61.0
Deduct 645 from 1060 and we're left with 415.
Take the next digit (7) from the dividend and append it to 415, then repeat: 4157 / 645

Going ahead to step 6:
The number 645 fits into 4157 6 times, leaving a remainder of 287.
The next digit of our result is 6. 
Result so far: 616.0
If we subtract 3870 from 4157, we get 287.
Bring next digit (0) of the dividend behind the 287 and repeat the process: 2870 / 645

On to step 7:
When dividing 2870 by 645, we get 4 with a remainder of 290.
The number 4 becomes the next digit in our result. 
Result so far: 6164.0
If we subtract 2580 from 2870, we get 290.
Take the next digit (6) from the dividend and append it to 290, then repeat: 2906 / 645

Going ahead to step 8:
2906 divided by 645 is 4 with a remainder of 326.
Record the quotient 4 as the next digit in the result. 
Result so far: 61644.0
Deduct 2580 from 2906 and we're left with 326.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

Step 9:
645 can be fit into 3260 5 times, resulting in a remainder of 35.
The next digit of our result is 5. 
Result so far: 61644.5
The remainder is 35 after subtracting 3225 from 3260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 10:
645 goes into 350 0 times with a remainder of 350.
The number 0 becomes the next digit in our result. 
Result so far: 61644.5
Subtract 0 from 350 to get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Advancing to step 11:
645 can be fit into 3500 5 times, resulting in a remainder of 275.
The next digit of our result is 5. 
Result so far: 61644.505
If we take 3225 away from 3500, we end up with 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Advancing to step 12:
The number 645 fits into 2750 4 times, leaving a remainder of 170.
Use 4 as the next digit of our solution. 
Result so far: 61644.5054
If we subtract 2580 from 2750, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Let's proceed to step 13:
1700 divided by 645 is 2 with a remainder of 410.
Record the quotient 2 as the next digit in the result. 
Result so far: 61644.50542
Subtracting 1290 from 1700 leaves us with 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Let's proceed to step 14:
4100 divided by 645 is 6 with a remainder of 230.
Write down 6 as next digit of the result. 
Result so far: 61644.505426
If we subtract 3870 from 4100, we get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Advancing to step 15:
If we divide 2300 by 645, we get 3 and a remainder of 365.
The next digit of our result is 3. 
Result so far: 61644.5054263
Deduct 1935 from 2300 and we're left with 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Step 16:
The number 645 fits into 3650 5 times, leaving a remainder of 425.
Use 5 as the next digit of our solution. 
Result so far: 61644.50542635
If we subtract 3225 from 3650, we get 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

The final outcome is 61644.50542635, with a leftover of 4.25e-07.