Function multipleOf

packages/zod/src/v4/classic/schemas.ts:1042–1044

(value, params)

      return this.check(checks.lte(0, params));
    },
    multipleOf(value, params) {
      return this.check(checks.multipleOf(value, params));
    },
    step(value, params) {
      return this.check(checks.multipleOf(value, params));
    },