We're dividing 64100 by 90 
Let's see how many times 90 fits into 64100.

Going ahead to step 1:
90 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 90

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.
Bring next digit (1) of the dividend behind the 64 and repeat the process: 641 / 90

Moving on to step 3:
If we divide 641 by 90, we get 7 and a remainder of 11.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we take 630 away from 641, we end up with 11.
Take the next digit (0) from the dividend and append it to 11, then repeat: 110 / 90

Going ahead to step 4:
The number 90 fits into 110 1 times, leaving a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 71.0
Subtracting 90 from 110 leaves us with 20.
Append the next digit (0) from the dividend to 20 and continue with: 200 / 90

Going ahead to step 5:
When dividing 200 by 90, we get 2 with a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 712.0
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 6:
If we divide 200 by 90, we get 2 and a remainder of 20.
The next digit of our result is 2. 
Result so far: 712.2
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 7:
90 goes into 200 2 times with a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 712.22
Subtracting 180 from 200 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 712.22 with a remaining 0.02.