Salut!
(2688÷56÷6+492)÷100+(1792÷28÷8) =
(48÷6+492)÷100+(1792÷28÷8) =
(8+492)÷100+(1792÷28÷8) =
500÷100+(1792÷28÷8) =
500÷100+(64÷8) =
500÷100+8 =
5+8 =
13