1 / 18 + 1 / 54 + 1 / 108 + 1 / 180 + 1 / 270 =? ("/" fractional line, the number in front is the molecule) clever calculation, please! Pay attention! Use skillfully!

1/18+1/54+1/108+1/180+1/270
=1/18(1+1/3+1/6+1/10+1/15)
=1/18(1+1/3+1/6+1/6)
=1/18(1+1/3+1/3)
=1/18×5/3
=5/54

The product of two numbers is 120. If one factor is multiplied by 5 and the other factor is divided by 3, what is the product?

The product of two numbers is 120. If one factor is multiplied by 5 and the other factor is divided by 3, then the product is 120
120*5/3=200

The product of two numbers is 120. If one factor multiplies five and the other factor divides three, what is the product?

The product is: 600

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