39895060 ÷ 645 
Our goal is to divide 39895060 by 645.

Moving on to step 1:
645 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 645

Going ahead to step 2:
If we divide 39 by 645, we get 0 and a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Grab the next digit (8) from the dividend, add it to 39, then carry on: 398 / 645

Moving on to step 3:
398 divided by 645 is 0 with a remainder of 398.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 398 leaves us with 398.
Grab the next digit (9) from the dividend, add it to 398, then carry on: 3989 / 645

Advancing to step 4:
645 goes into 3989 6 times with a remainder of 119.
The next digit of our result is 6. 
Result so far: 6.0
Deduct 3870 from 3989 and we're left with 119.
Bring next digit (5) of the dividend behind the 119 and repeat the process: 1195 / 645

On to step 5:
1195 divided by 645 is 1 with a remainder of 550.
Record the quotient 1 as the next digit in the result. 
Result so far: 61.0
Subtracting 645 from 1195 leaves us with 550.
Fetch the next digit (0) from the dividend, attach it to 550 and continue: 5500 / 645

Let's proceed to step 6:
5500 divided by 645 is 8 with a remainder of 340.
The number 8 becomes the next digit in our result. 
Result so far: 618.0
Deduct 5160 from 5500 and we're left with 340.
Append the next digit (6) from the dividend to 340 and continue with: 3406 / 645

Going ahead to step 7:
When dividing 3406 by 645, we get 5 with a remainder of 181.
Use 5 as the next digit of our solution. 
Result so far: 6185.0
Subtract 3225 from 3406 to get 181.
Take the next digit (0) from the dividend and append it to 181, then repeat: 1810 / 645

Moving on to step 8:
When dividing 1810 by 645, we get 2 with a remainder of 520.
The number 2 becomes the next digit in our result. 
Result so far: 61852.0
Subtracting 1290 from 1810 leaves us with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Step 9:
If we divide 5200 by 645, we get 8 and a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 61852.8
Deduct 5160 from 5200 and we're left 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.

Going ahead to step 10:
645 goes into 400 0 times with a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 61852.8
Subtracting 0 from 400 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Let's proceed to step 11:
If we divide 4000 by 645, we get 6 and a remainder of 130.
Write down 6 as next digit of the result. 
Result so far: 61852.806
Subtracting 3870 from 4000 leaves us with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Let's proceed to step 12:
When dividing 1300 by 645, we get 2 with a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 61852.8062
Subtract 1290 from 1300 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 13:
645 can be fit into 100 0 times, resulting in a remainder of 100.
Record the quotient 0 as the next digit in the result. 
Result so far: 61852.8062
The remainder is 100 after subtracting 0 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 14:
If we divide 1000 by 645, we get 1 and a remainder of 355.
Record the quotient 1 as the next digit in the result. 
Result so far: 61852.806201
Subtract 645 from 1000 to get 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Going ahead to step 15:
When dividing 3550 by 645, we get 5 with a remainder of 325.
Write down 5 as next digit of the result. 
Result so far: 61852.8062015
If we subtract 3225 from 3550, we get 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Let's proceed to step 16:
645 can be fit into 3250 5 times, resulting in a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 61852.80620155
Deduct 3225 from 3250 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The final result is 61852.80620155 with a remainder of 2.5e-08.