He has enough milk for 20 glasses of chocolate milk because 130 / 6.5 = <<130/6.5=20>>20
He has enough syrup for 40 glasses of chocolate milk because 60 / 1.5 = <<60/1.5=40>>40
He can make 20 glasses of chocolate milk because 20 < 40
He will drink 160 ounces of chocolate milk because 20 x 8 = <<20*8=160>>160
#### 160