Answer this question:Méliès bought 2 kg of meat. The meat costs $82 per kilogram. Méliès has $180 in his wallet. How much money does he have left after paying for the meat?
Méliès paid 2 x $82 = $164 for the 2 kg of meat. So he has $180 – $164 = $16 left.
The answer is 16.

Answer this question:In ancient China, soldiers positioned in beacon towers along the Great Wall would send smoke signals to warn of impending attacks. Since the towers were located at 5 kilometer intervals, they could send a signal the length of the Great Wall. If the Great wall was 7300 kilometers long, and every tower had two soldiers, what was the combined number of soldiers in beacon towers on the Great Wall?
If there were beacon towers every 5 kilometers along the 7300 kilometer length of the Great Wall, then there were 7300 / 5 = 1460 beacon towers. If every tower had two soldiers, then there were a total of 1460 * 2 = 2920 soldiers in beacon towers along the Great Wall.
The answer is 2920.

Answer this question:Erin counts six trolls hiding by the path in the forest, 6 less than four times that number of trolls hiding under the bridge, and half as many trolls hiding in the plains as under the bridge. How many trolls did she count in total?
First, multiply the number of forest trolls by 4: 6 trolls * 4 = 24 trolls. Then subtract 6 from that number to find the number of bridge trolls: 24 trolls - 6 trolls = 18 trolls. Then divide that number by 2 to find the number of plains trolls: 18 trolls / 2 = 9 trolls. Then add the number of trolls she saw in each location to find the total number: 6 trolls + 18 trolls + 9 trolls = 33 trolls.
The answer is 33.

Answer this question:One of Robi's new year's resolutions is to start saving. He started to save $2 in January. This is followed by $4 in February and $8 in March. If he continues this saving pattern, how much will be his total savings after 6 months?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Robi will save $8 x 2 = $16 in April. He will save $16 x 2 = $32 in May. He will save $32 x 2 = $64 in June. Hence, his total savings after 6 months will be $2 + $4 + $8 + $16 + $32 + $64 = $126.
The answer is 126.