You need to use PEMDAS, so since the exponents are inside the parentheses, you solve the exponents first. Then you would have (8*100)(3*1,000,000,000,000). After that you then you work out the math within the parentheses. Once you've found (8*100)(3*1,000,000,000,000), then you mulitply the number in the first set of parentheses with the number in the second set of parentheses.
You need to use PEMDAS, so since the exponents are inside the parentheses, you solve the exponents first. Then you would have (8*100)(3*1,000,000,000,000). After that you then you work out the math within the parentheses. Once you've found (8*100)(3*1,000,000,000,000), then you mulitply the number in the first set of parentheses with the number in the second set of parentheses.