210903 divided by 64 
We want to figure out the number of times 210903 can be divided by 64.

Step 1:
The number 64 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 64

Moving on to step 2:
64 goes into 21 0 times with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Fetch the next digit (0) from the dividend, attach it to 21 and continue: 210 / 64

Advancing to step 3:
64 goes into 210 3 times with a remainder of 18.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 192 from 210 and we're left with 18.
Take the next digit (9) from the dividend and append it to 18, then repeat: 189 / 64

Step 4:
If we divide 189 by 64, we get 2 and a remainder of 61.
The next digit of our result is 2. 
Result so far: 32.0
Deduct 128 from 189 and we're left with 61.
Take the next digit (0) from the dividend and append it to 61, then repeat: 610 / 64

Let's proceed to step 5:
When dividing 610 by 64, we get 9 with a remainder of 34.
Write down 9 as next digit of the result. 
Result so far: 329.0
If we subtract 576 from 610, we get 34.
Fetch the next digit (3) from the dividend, attach it to 34 and continue: 343 / 64

Let's proceed to step 6:
The number 64 fits into 343 5 times, leaving a remainder of 23.
The next digit of our result is 5. 
Result so far: 3295.0
Subtract 320 from 343 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 7:
64 can be fit into 230 3 times, resulting in a remainder of 38.
Put 3 as the next digit of the answer. 
Result so far: 3295.3
Deduct 192 from 230 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 8:
64 goes into 380 5 times with a remainder of 60.
Put 5 as the next digit of the answer. 
Result so far: 3295.35
If we subtract 320 from 380, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 9:
600 divided by 64 is 9 with a remainder of 24.
Use 9 as the next digit of our solution. 
Result so far: 3295.359
Subtract 576 from 600 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 10:
The number 64 fits into 240 3 times, leaving a remainder of 48.
The next digit of our result is 3. 
Result so far: 3295.3593
Deduct 192 from 240 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 11:
480 divided by 64 is 7 with a remainder of 32.
Write down 7 as next digit of the result. 
Result so far: 3295.35937
Subtracting 448 from 480 leaves us 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.

Advancing to step 12:
320 divided by 64 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 3295.359375
The remainder is 0 after subtracting 320 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 13:
If we divide 0 by 64, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 3295.359375
The remainder is 0 after subtracting 0 from 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 14:
64 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 3295.359375
Deduct 0 from 0 and we're left 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 3295.359375, with a leftover of 0.0.