Answer:

To find out how many calculations the computer can perform in 30 hours, you can use the given rate of calculations per second.

1. Find the number of calculations per hour:

\[ 4.7 \times 10^5 \text{ calculations/second} \times 60 \text{ seconds/minute} \times 60 \text{ minutes/hour} \]

2. Multiply the result by the number of hours (30):

\[ \text{Calculations per hour} \times 30 \text{ hours} \]

Here's the calculation:

\[ (4.7 \times 10^5 \text{ calculations/second}) \times (60 \text{ seconds/minute}) \times (60 \text{ minutes/hour}) \times 30 \text{ hours} \]

This will give you the total number of calculations the computer can perform in 30 hours in scientific notation.