The computer store has a laptop regularly priced at $2160. Frank negotiated a 33 1/3% discount. How much money will Frank save buying the laptop on sale? How much will he have to pay for the laptop?

To find the discount amount, multiply the original price by the discount percentage: $2160 * 0.3333 = $<<2160*0.3333=719.98>>719.98

Frank will save $719.98
Subtract the discount amount from the original price to find Frank's cost: $2160 - $719.98 = $<<2160-719.98=1440.02>>1440.02. Answer: \boxed{1440.02}.

To find out how much money Frank will save buying the laptop on sale, we first need to calculate the discount amount.

Step 1: Convert 33 1/3% to a decimal.
33 1/3% is equivalent to 33.33%, which can be written as 0.3333 in decimal form.

Step 2: Calculate the discount amount.
Discount amount = Regular price * Discount rate
Discount amount = $2160 * 0.3333

Calculating the discount amount:
Discount amount = $719.988

Step 3: Calculate how much Frank will have to pay for the laptop.
Amount to pay = Regular price - Discount amount
Amount to pay = $2160 - $719.988

Calculating the amount to pay:
Amount to pay = $1440.012

Therefore, Frank will save $719.988 buying the laptop on sale, and he will have to pay $1440.012 for the laptop.