[填空题]
A Pyrex measuring cup was calibrated at normal )znmvrn0u0z :,v-u5ahla bfz/c0ue, rook wdn;d)(paa9n.l(6 e+pg ujlm temperature. How much error will be made in a recipe calling for 300 mL of copd 9.pa(+ewnj( udlnag6 )lk;ol water, if the water and the cup are hot, at 80$^{\circ} $C, instead of at 20$^{\circ} $C? Neglect the glass expansion.$\approx$ ml