function ppmtimport { ppmt } from "https://dotland.deno.dev/x/financial@v0.1.3/src/financial.ts"; ppmt(rate: number,per: number,nper: number,pv: number,fv?,when?,): numberCompute the payment against loan principal. Parametersrate: number Rate of interest (per period) per: number Amount paid against the loan changes. The per is the period of interest. nper: number Number of compounding periods pv: number Present value optionalfv = [UNSUPPORTED] Future value optionalwhen = [UNSUPPORTED] When payments are due Returnsnumberthe payment against loan principal