Operation Legacy - outdoor escape game

Welcome agents, we are the organization WISE (World Immunity Systems, Europe), working against immunological terrorism worldwide. Your task is to find the lost formula - an equation related to the cultivation of penicillin. In 1933, lab technician Mary Hunt, the developer of the formula, had to flee Hitler's Abwehr and other organizations that wanted to get their hands on it. On her escape route, Hunt got stuck in Helsinki and decided to hide the formula around the city. Last month, Mary Hunt's granddaughter, Laura Hunt, found a letter in which Mary reveals her plot and gives cryptic clues to the hiding places. Set out in search of the formula under Laura Hunt's guidance, which would be crucially important for modern medicine. But beware - unknown organizations are still interested in the formula and may try to impede you.