Let's divide 386964 by 90
We're looking to find how many times 90 goes into 386964.

Step 1:
When dividing 3 by 90, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 90

On to step 2:
38 divided by 90 is 0 with a remainder of 38.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 38 to get 38.
Grab the next digit (6) from the dividend, add it to 38, then carry on: 386 / 90

Let's proceed to step 3:
If we divide 386 by 90, we get 4 and a remainder of 26.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we subtract 360 from 386, we get 26.
Fetch the next digit (9) from the dividend, attach it to 26 and continue: 269 / 90

Moving on to step 4:
90 can be fit into 269 2 times, resulting in a remainder of 89.
The next digit of our result is 2. 
Result so far: 42.0
Deduct 180 from 269 and we're left with 89.
Append the next digit (6) from the dividend to 89 and continue with: 896 / 90

Step 5:
896 divided by 90 is 9 with a remainder of 86.
Use 9 as the next digit of our solution. 
Result so far: 429.0
If we take 810 away from 896, we end up with 86.
Bring next digit (4) of the dividend behind the 86 and repeat the process: 864 / 90

Step 6:
When dividing 864 by 90, we get 9 with a remainder of 54.
Record the quotient 9 as the next digit in the result. 
Result so far: 4299.0
Subtract 810 from 864 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 7:
540 divided by 90 is 6 with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 4299.6
Subtract 540 from 540 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 8:
90 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4299.6
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.

Let's proceed to step 9:
The number 90 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 4299.6
Subtracting 0 from 0 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.

After the division, we end up with 4299.6 and a remainder of 0.0.