When converting scientific notation to standard form you will move the decimal the number of times that is shown in the exponent which in this case is 4. So , you move the decimal to the right since it is a positive 4 then that would give you the number 27,000 which is in standard form.
This problem is a rate times time problem. To find the total amount, you must take the rate per unit of time, and multiply it by the given unit of time