64216 divided by 90 
We want to figure out the number of times 64216 can be divided by 90.

On to step 1:
90 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 90

Going ahead to step 2:
90 goes into 64 0 times with a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Fetch the next digit (2) from the dividend, attach it to 64 and continue: 642 / 90

Moving on to step 3:
When dividing 642 by 90, we get 7 with a remainder of 12.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Deduct 630 from 642 and we're left with 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 90

On to step 4:
121 divided by 90 is 1 with a remainder of 31.
Use 1 as the next digit of our solution. 
Result so far: 71.0
If we subtract 90 from 121, we get 31.
Fetch the next digit (6) from the dividend, attach it to 31 and continue: 316 / 90

Going ahead to step 5:
316 divided by 90 is 3 with a remainder of 46.
The number 3 becomes the next digit in our result. 
Result so far: 713.0
If we take 270 away from 316, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 6:
The number 90 fits into 460 5 times, leaving a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 713.5
If we take 450 away from 460, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 7:
If we divide 100 by 90, we get 1 and a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 713.51
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
If we divide 100 by 90, we get 1 and a remainder of 10.
The next digit of our result is 1. 
Result so far: 713.511
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 713.511 with a remainder of 0.001.