Salutare!
{8+66:[100-(80:4+45:5)-5]}×28=
{8+66:[100-(20+9)-5]}×28=
[8+66:(100-29-5)]×28=
[8+66:(71-5)]×28=
(8+66:66)×28=
(8+1)×28=
9×28=
252
#Succes!