A monkey in the zoo weighs about 7.5 kilograms, a tiger weighs about 8 times that of a monkey, and an elephant weighs about 42.5 times that of a tiger. How many tons does an elephant weigh?
动物园里一只小猴的重量约是7.5千克，一只老虎的重量大约是小猴的8倍，一只大象的重量约是这只老虎的42.5倍．一头大象重约多少吨？
<result>2.55</result>