total no of students =1089
fraction of them wearing 1 glove =1/9 of 1089 =1/9 *1089 =121 wear 1 glove (no of gloves =121)
no of students left =1089 -121 =968
half of them wear both gloves =968/2 =481 wear both gloves (no of gloves =481*2 = 692)
no of gloves used =121+692 =813
thank you and hope the answer is right .