Add a new endpoint to your API Use Promises and setTimeout to make all of your functions asynchronous. The endpoint will be /specialOperation This endpoint will take the parameters: length, width, and grade It will asynchronously (with your utility module) get the grade result and rectangle result. It will look something like this: {"gradeStats":{"average":86.25,"minimum":73,"maximum":97},"rectangle":{"area":8,"perimeter":12}} Use promises (obvi). Notes Do not make your utility module functions take an entire req object. const express = require("express"); const session = require("express-session"); const dotenv = require("dotenv"); dotenv.config(); const app = express(); app.use(session({ secret:"secret-key", resave: false, saveUninitialized: false, })); app.use((req, res, next) => { if (!req.session.commandCount) { req.session.commandCount = 0; } if (!req.session.lastCommand) { req.session.lastCommand = ""; } next(); }); app.get('/dotted', (req, res) => { req.session.commandCount++; req.session.lastCommand="/dotted"; const { word1, word2 } = req.query; const dots = '.'.repeat(30 - word1.length - word2.length); const result = `${word1}${dots}${word2}`; res.status(200).contentType('text/html').send(result); }); app.get("/fizzBuzz",(req,res)=>{ req.session.commandCount++; req.session.lastCommand="/fizzBuzz"; const start=parseInt(req.query.start); const end=parseInt(req.query.end); let response= ""; for (let i = start; i ${response}`); }); app.get("/grageStats", (req,res) =>{ req.session.commandCount++; req.session.lastCommand="/gradeStats"; const {grades}=req.query; const min= Math.min(...grades); const max= Math.max(...grades); const avg= (grades.reduce((a, b) => a + b) / grades.length).toFixed(2); const result = JSON.stringify({ average: avg, minimum: min, maximum: max }); res.status(200).contentType("application/json").send(result); }); app.get("/rectangle", (req,res) =>{ req.session.commandCount++; req.session.lastCommand="/rectangle"; const length=parseInt(req.query.length); const width= parseInt(req.query.width); const area = length*width; const perimeter = 2*(length+width); const response = {area,perimeter}; res.contentType("application/json"); res.send(response); }); app.get('/stats', (req, res) => { res.json({ commandCount: req.session.commandCount, lastCommand: req.session.lastCommand}); }); const PORT = process.env.PORT || 3000; const HOST = process.env.HOST || 'localhost'; app.listen(PORT, HOST, () => { console.log(`Server running at http://${HOST}:${PORT}`); });