> let a1 = 2 :: Int > let a2 = 3 :: Int > a1 * a2 6 > let b1 = 2 :: Double > let b2 = 3 :: Double > b1 * b2 6.0 > a1 * b2 <interactive>:1387:6: error: • Couldn't match expected type ‘Int’ with actual type ‘Double’ • In the second argument of ‘(*)’, nam</interactive>…