636121 ÷ 64 
We're looking to find how many times 64 goes into 636121.

Let's proceed to step 1:
64 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 64

Let's proceed to step 2:
When dividing 63 by 64, we get 0 with a remainder of 63.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 63, we end up with 63.
Include the next digit (6) from the dividend after 63, then repeat: 636 / 64

Advancing to step 3:
If we divide 636 by 64, we get 9 and a remainder of 60.
The next digit of our result is 9. 
Result so far: 9.0
If we take 576 away from 636, we end up with 60.
Take the next digit (1) from the dividend and append it to 60, then repeat: 601 / 64

Moving on to step 4:
The number 64 fits into 601 9 times, leaving a remainder of 25.
Write down 9 as next digit of the result. 
Result so far: 99.0
Deduct 576 from 601 and we're left with 25.
Bring next digit (2) of the dividend behind the 25 and repeat the process: 252 / 64

Going ahead to step 5:
64 goes into 252 3 times with a remainder of 60.
Record the quotient 3 as the next digit in the result. 
Result so far: 993.0
If we take 192 away from 252, we end up with 60.
Bring next digit (1) of the dividend behind the 60 and repeat the process: 601 / 64

Let's proceed to step 6:
64 goes into 601 9 times with a remainder of 25.
Use 9 as the next digit of our solution. 
Result so far: 9939.0
The remainder is 25 after subtracting 576 from 601.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 7:
The number 64 fits into 250 3 times, leaving a remainder of 58.
Write down 3 as next digit of the result. 
Result so far: 9939.3
Subtract 192 from 250 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 8:
64 goes into 580 9 times with a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 9939.39
The remainder is 4 after subtracting 576 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
64 goes into 40 0 times with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 9939.39
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 10:
64 goes into 400 6 times with a remainder of 16.
The next digit of our result is 6. 
Result so far: 9939.3906
Deduct 384 from 400 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 11:
If we divide 160 by 64, we get 2 and a remainder of 32.
Write down 2 as next digit of the result. 
Result so far: 9939.39062
Deduct 128 from 160 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 12:
If we divide 320 by 64, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 9939.390625
Subtracting 320 from 320 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 13:
When dividing 0 by 64, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 9939.390625
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 14:
0 divided by 64 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 9939.390625
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 9939.390625, with a leftover of 0.0.