function solve () {
  let inputTextArea = document.querySelector('textarea')
  let productsTable = document.querySelector('tbody')

  let generateButton = document.querySelector('button')
  generateButton.addEventListener('click', function () {
    let object = JSON.parse(inputTextArea.value)
    for (let i = 0; i < object.length; i++) {
      // creates new row
      let newTrElement = document.createElement('tr')
      productsTable.appendChild(newTrElement)

      // creates a cell for the image
      let imageTd = document.createElement('td')
      let image = document.createElement('img')
      image.src = object[i].img
      imageTd.appendChild(image)

      newTrElement.appendChild(imageTd)

      // creates a cell for the name
      let nameTd = document.createElement('td')
      let name = document.createElement('p')
      name.textContent = object[i].name
      nameTd.appendChild(name)

      newTrElement.appendChild(nameTd)

      // creates a cell for the price
      let priceTd = document.createElement('td')
      let price = document.createElement('p')
      price.textContent = object[i].price
      priceTd.appendChild(price)

      newTrElement.appendChild(priceTd)

      // creates a cell for the decFaftor
      let decfacTd = document.createElement('td')
      let decfact = document.createElement('p')
      decfact.textContent = object[i].decFactor
      decfacTd.appendChild(decfact)

      newTrElement.appendChild(decfacTd)

      // creates a checkable checkbox..the default one isn`t
      let checkBoxTd = document.createElement('td')
      let checkBox = document.createElement('input')
      checkBox.type = 'checkbox'
      checkBox.disabled = false
      checkBoxTd.appendChild(checkBox)

      newTrElement.appendChild(checkBoxTd)
    }
  })

  let buyButton = document.querySelectorAll('button')[1]

  buyButton.addEventListener('click', function () {
    let allTr = document.querySelectorAll('tr')
    let allFurniture = []
    let allDecFacts = 0
    let totalPrice = 0
    for (let i = 2; i < allTr.length; i++) {
      let currentCheckBox = allTr[i].querySelector('input')
      if (currentCheckBox.checked) {
        allFurniture.push(allTr[i].children[1].textContent)
        allDecFacts += +allTr[i].children[3].textContent
        totalPrice += +allTr[i].children[2].textContent
      }
    }

    let averageDecFact = allDecFacts / allFurniture.length

    document.getElementsByTagName('textarea')[1].value =
      'Bought furniture: ' +
      allFurniture.join(', ') +
      '\nTotal price: ' +
      totalPrice.toFixed(2) +
      '\nAverage decoration factor: ' +
      averageDecFact
  })
}