64333907 ÷ 621 
We're looking to find how many times 621 goes into 64333907.

On to step 1:
The number 621 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 621

On to step 2:
621 can be fit into 64 0 times, resulting in a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Fetch the next digit (3) from the dividend, attach it to 64 and continue: 643 / 621

Let's proceed to step 3:
If we divide 643 by 621, we get 1 and a remainder of 22.
The next digit of our result is 1. 
Result so far: 1.0
If we take 621 away from 643, we end up with 22.
Take the next digit (3) from the dividend and append it to 22, then repeat: 223 / 621

Advancing to step 4:
The number 621 fits into 223 0 times, leaving a remainder of 223.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
The remainder is 223 after subtracting 0 from 223.
Append the next digit (3) from the dividend to 223 and continue with: 2233 / 621

Step 5:
When dividing 2233 by 621, we get 3 with a remainder of 370.
Put 3 as the next digit of the answer. 
Result so far: 103.0
If we take 1863 away from 2233, we end up with 370.
Bring next digit (9) of the dividend behind the 370 and repeat the process: 3709 / 621

Step 6:
If we divide 3709 by 621, we get 5 and a remainder of 604.
The next digit of our result is 5. 
Result so far: 1035.0
If we subtract 3105 from 3709, we get 604.
Bring next digit (0) of the dividend behind the 604 and repeat the process: 6040 / 621

On to step 7:
When dividing 6040 by 621, we get 9 with a remainder of 451.
Use 9 as the next digit of our solution. 
Result so far: 10359.0
If we take 5589 away from 6040, we end up with 451.
Include the next digit (7) from the dividend after 451, then repeat: 4517 / 621

Let's proceed to step 8:
621 goes into 4517 7 times with a remainder of 170.
Write down 7 as next digit of the result. 
Result so far: 103597.0
The remainder is 170 after subtracting 4347 from 4517.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

On to step 9:
621 goes into 1700 2 times with a remainder of 458.
Write down 2 as next digit of the result. 
Result so far: 103597.2
If we subtract 1242 from 1700, we get 458.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

Moving on to step 10:
621 goes into 4580 7 times with a remainder of 233.
Record the quotient 7 as the next digit in the result. 
Result so far: 103597.27
If we subtract 4347 from 4580, we get 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

Advancing to step 11:
If we divide 2330 by 621, we get 3 and a remainder of 467.
Put 3 as the next digit of the answer. 
Result so far: 103597.273
If we subtract 1863 from 2330, we get 467.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4670, and continue the process.

Step 12:
621 can be fit into 4670 7 times, resulting in a remainder of 323.
Use 7 as the next digit of our solution. 
Result so far: 103597.2737
Subtract 4347 from 4670 to get 323.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3230, and continue the process.

Let's proceed to step 13:
When dividing 3230 by 621, we get 5 with a remainder of 125.
Put 5 as the next digit of the answer. 
Result so far: 103597.27375
Subtracting 3105 from 3230 leaves us with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 14:
621 can be fit into 1250 2 times, resulting in a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 103597.273752
Subtract 1242 from 1250 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 15:
The number 621 fits into 80 0 times, leaving a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 103597.273752
Subtracting 0 from 80 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 16:
800 divided by 621 is 1 with a remainder of 179.
Record the quotient 1 as the next digit in the result. 
Result so far: 103597.27375201
If we take 621 away from 800, we end up with 179.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

The final result is 103597.27375201 with a remainder of 1.79e-07.