src.totals.js

import React from "react";
export default function Totals({ priceArr, freqInDays, amountToInvest }) {
  const numOfDays = priceArr.length;
  let coinAmount = 0;
  for (let i = 0; i < numOfDays; i += freqInDays) {
    const coinValue = priceArr[i][1];
    coinAmount += amountToInvest / coinValue;
  }
  const totalCoinAmount = coinAmount;
  const totalInvested = amountToInvest * Math.floor(numOfDays / freqInDays);
  const endTotal = totalCoinAmount * priceArr[priceArr.length - 1][1];
  const numberGained = endTotal - totalInvested;
  const percentGained = ((endTotal - totalInvested) / totalInvested) * 100;
  return <div>Totals</div>;
}