乘法的

例句：

1. 1. The cost of the new car is five times what it used to be.
   这辆新车的成本是以前的一半。
2. 2.The population of the city has doubled since the last census.
   自从上次人口普查以来，该市的人口翻了一番。
3. 3. The sales of this product have increased by 30% since last year.
   该产品的销售额从去年增加了30%。