646640 ÷ 69 
We're looking to find how many times 69 goes into 646640.

On to step 1:
6 divided by 69 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 69

Advancing to step 2:
69 can be fit into 64 0 times, resulting in a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 64, we end up with 64.
Append the next digit (6) from the dividend to 64 and continue with: 646 / 69

On to step 3:
69 can be fit into 646 9 times, resulting in a remainder of 25.
Put 9 as the next digit of the answer. 
Result so far: 9.0
The remainder is 25 after subtracting 621 from 646.
Grab the next digit (6) from the dividend, add it to 25, then carry on: 256 / 69

Step 4:
69 can be fit into 256 3 times, resulting in a remainder of 49.
The number 3 becomes the next digit in our result. 
Result so far: 93.0
Deduct 207 from 256 and we're left with 49.
Take the next digit (4) from the dividend and append it to 49, then repeat: 494 / 69

Step 5:
When dividing 494 by 69, we get 7 with a remainder of 11.
The number 7 becomes the next digit in our result. 
Result so far: 937.0
If we take 483 away from 494, we end up with 11.
Bring next digit (0) of the dividend behind the 11 and repeat the process: 110 / 69

Let's proceed to step 6:
69 can be fit into 110 1 times, resulting in a remainder of 41.
Record the quotient 1 as the next digit in the result. 
Result so far: 9371.0
If we take 69 away from 110, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Going ahead to step 7:
If we divide 410 by 69, we get 5 and a remainder of 65.
Write down 5 as next digit of the result. 
Result so far: 9371.5
The remainder is 65 after subtracting 345 from 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 8:
69 goes into 650 9 times with a remainder of 29.
The next digit of our result is 9. 
Result so far: 9371.59
Subtract 621 from 650 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 9:
If we divide 290 by 69, we get 4 and a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 9371.594
Subtracting 276 from 290 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 10:
69 can be fit into 140 2 times, resulting in a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 9371.5942
If we subtract 138 from 140, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 11:
20 divided by 69 is 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 9371.5942
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 12:
The number 69 fits into 200 2 times, leaving a remainder of 62.
Use 2 as the next digit of our solution. 
Result so far: 9371.594202
Subtracting 138 from 200 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 13:
69 goes into 620 8 times with a remainder of 68.
Put 8 as the next digit of the answer. 
Result so far: 9371.5942028
Subtract 552 from 620 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 14:
If we divide 680 by 69, we get 9 and a remainder of 59.
Record the quotient 9 as the next digit in the result. 
Result so far: 9371.59420289
Subtract 621 from 680 to get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

In conclusion, the division gives 9371.59420289 with a balance of 5.9e-08.