2. The ratio between them is 46:35, that is, the least common multiple of the price standard deviation, and then the ratio between them should be 46:35, that is, the price standard deviation of 46 gallons of jet fuel and the standard deviation of 35 gallons of hot oil futures. It can be seen that there are 2 1 .740 46 gallons in110,000 gallons of aviation fuel oil, that is, 35 gallons of hot oil futures are expanded by 2 1.740 times, and 654,380+000 tons of hot oil futures are obtained, and one contract is 42,000 gallons, so 65438 is calculated.