I am trying to run a test through jest. Test code below:

  describe('multiply', () => {
        test('multiplies two numbers', () => {
            expect(calculator.multiply([2,4])).toBe(8);
        }); 

My code

const multiply = function() {
let toBe = ([`0`] * [`0`]);
return toBe;
};

What am I doing wrong here? I am confused by my result. Thank you in advance.