40618964 ÷ 645 
Our goal is to divide 40618964 by 645.

Let's proceed to step 1:
4 divided by 645 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 645

Let's proceed to step 2:
When dividing 40 by 645, we get 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 40 after subtracting 0 from 40.
Bring next digit (6) of the dividend behind the 40 and repeat the process: 406 / 645

Advancing to step 3:
645 goes into 406 0 times with a remainder of 406.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 406 and we're left with 406.
Grab the next digit (1) from the dividend, add it to 406, then carry on: 4061 / 645

Step 4:
If we divide 4061 by 645, we get 6 and a remainder of 191.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we take 3870 away from 4061, we end up with 191.
Grab the next digit (8) from the dividend, add it to 191, then carry on: 1918 / 645

Advancing to step 5:
645 goes into 1918 2 times with a remainder of 628.
Record the quotient 2 as the next digit in the result. 
Result so far: 62.0
The remainder is 628 after subtracting 1290 from 1918.
Append the next digit (9) from the dividend to 628 and continue with: 6289 / 645

Moving on to step 6:
645 goes into 6289 9 times with a remainder of 484.
Use 9 as the next digit of our solution. 
Result so far: 629.0
If we subtract 5805 from 6289, we get 484.
Include the next digit (6) from the dividend after 484, then repeat: 4846 / 645

Moving on to step 7:
645 can be fit into 4846 7 times, resulting in a remainder of 331.
Use 7 as the next digit of our solution. 
Result so far: 6297.0
If we subtract 4515 from 4846, we get 331.
Bring next digit (4) of the dividend behind the 331 and repeat the process: 3314 / 645

Advancing to step 8:
3314 divided by 645 is 5 with a remainder of 89.
Record the quotient 5 as the next digit in the result. 
Result so far: 62975.0
Subtract 3225 from 3314 to get 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Going ahead to step 9:
If we divide 890 by 645, we get 1 and a remainder of 245.
Record the quotient 1 as the next digit in the result. 
Result so far: 62975.1
If we subtract 645 from 890, we get 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Moving on to step 10:
When dividing 2450 by 645, we get 3 with a remainder of 515.
Record the quotient 3 as the next digit in the result. 
Result so far: 62975.13
Subtracting 1935 from 2450 leaves us with 515.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

On to step 11:
When dividing 5150 by 645, we get 7 with a remainder of 635.
Use 7 as the next digit of our solution. 
Result so far: 62975.137
Subtracting 4515 from 5150 leaves us with 635.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6350, and continue the process.

Advancing to step 12:
645 goes into 6350 9 times with a remainder of 545.
The next digit of our result is 9. 
Result so far: 62975.1379
If we subtract 5805 from 6350, we get 545.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5450, and continue the process.

Let's proceed to step 13:
645 goes into 5450 8 times with a remainder of 290.
Record the quotient 8 as the next digit in the result. 
Result so far: 62975.13798
If we take 5160 away from 5450, we end up with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Moving on to step 14:
645 can be fit into 2900 4 times, resulting in a remainder of 320.
Record the quotient 4 as the next digit in the result. 
Result so far: 62975.137984
If we take 2580 away from 2900, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 15:
If we divide 3200 by 645, we get 4 and a remainder of 620.
Write down 4 as next digit of the result. 
Result so far: 62975.1379844
If we subtract 2580 from 3200, we get 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

The final result is 62975.1379844 with a remainder of 6.2e-06.