I need to write a function where the product of two numbers need to equal 62 using JavaScript

So, I need to write a function that has two numbers and when multiplied equals 62.
This is what I have so far,

function multiply(){
  let a = 31
  let b = 2

  return a*b}

Now this is the test case that I need to pass

describe('multiply', function() {
 it("is an equation whose multiplied results will equal 62", function() {
  expect(num1).to.be.a('number')
  expect(num2).to.be.a('number')
  expect(multiply).to.eq(62)
});

I am not sure what I am doing wrong. I have tried different variations including Math.random() as well. Any help would be great.