function multiplicationimport { multiplication } from "https://dotland.deno.dev/x/somefn@v0.1.1-jsr/js/decimal.ts"; multiplication(x: number, y: number): number乘法 (避免浮点误差/舍入误差) https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Multiplication Parametersx: numbery: numberReturnsnumber