Hooray for Henrietta

A girl named Henrietta is our protagonist: she is going to get married to her boyfriend, a guy with a suspicious name Hopeless Harry, but that mischievous bird, John the Parrot, has stolen Henry's coat, boots, hat and trousers, and even kidnapped the groom himself. In order to save the wedding, we have to help Henrietta to recover the four pieces of clothes and free Henry. We are doing that by solving math equations (the options provide a huge variety of complex levels, as well of the possibility to choose between addition, subtraction, multiplication and division - or all of them) as quickly as possible - or the evil parrot will cover Henry in cold custard!