We're dividing 96459640 by 621 
We want to figure out the number of times 96459640 can be divided by 621.

Step 1:
The number 621 fits into 9 0 times, leaving a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (6) from the dividend, add it to 9, then carry on: 96 / 621

Going ahead to step 2:
If we divide 96 by 621, we get 0 and a remainder of 96.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 96 leaves us with 96.
Include the next digit (4) from the dividend after 96, then repeat: 964 / 621

Let's proceed to step 3:
621 can be fit into 964 1 times, resulting in a remainder of 343.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 343 after subtracting 621 from 964.
Take the next digit (5) from the dividend and append it to 343, then repeat: 3435 / 621

Advancing to step 4:
When dividing 3435 by 621, we get 5 with a remainder of 330.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 3105 away from 3435, we end up with 330.
Grab the next digit (9) from the dividend, add it to 330, then carry on: 3309 / 621

Going ahead to step 5:
The number 621 fits into 3309 5 times, leaving a remainder of 204.
Write down 5 as next digit of the result. 
Result so far: 155.0
If we subtract 3105 from 3309, we get 204.
Fetch the next digit (6) from the dividend, attach it to 204 and continue: 2046 / 621

Moving on to step 6:
2046 divided by 621 is 3 with a remainder of 183.
Record the quotient 3 as the next digit in the result. 
Result so far: 1553.0
Subtracting 1863 from 2046 leaves us with 183.
Fetch the next digit (4) from the dividend, attach it to 183 and continue: 1834 / 621

Advancing to step 7:
When dividing 1834 by 621, we get 2 with a remainder of 592.
Record the quotient 2 as the next digit in the result. 
Result so far: 15532.0
Deduct 1242 from 1834 and we're left with 592.
Grab the next digit (0) from the dividend, add it to 592, then carry on: 5920 / 621

Moving on to step 8:
621 can be fit into 5920 9 times, resulting in a remainder of 331.
The number 9 becomes the next digit in our result. 
Result so far: 155329.0
If we subtract 5589 from 5920, we get 331.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3310, and continue the process.

Let's proceed to step 9:
621 can be fit into 3310 5 times, resulting in a remainder of 205.
Write down 5 as next digit of the result. 
Result so far: 155329.5
Subtracting 3105 from 3310 leaves us with 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Let's proceed to step 10:
The number 621 fits into 2050 3 times, leaving a remainder of 187.
The next digit of our result is 3. 
Result so far: 155329.53
If we take 1863 away from 2050, we end up with 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

Moving on to step 11:
If we divide 1870 by 621, we get 3 and a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 155329.533
Deduct 1863 from 1870 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

The final outcome is 155329.533, with a leftover of 0.0007.