What is 30 multiplied by 15?

30 multiplied by 15 is equal to 450. This can be calculated by multiplying the two numbers together using the standard multiplication algorithm, which involves multiplying the units digits first, then the tens digits, and adding the results. In this case, 0 multiplied by 5 is 0, and 3 multiplied by 5 is 15. Combining these results gives the final answer of 450.