def calculate_day(year, month, day, hour):
    return 367*year - 7 / ( year + (month+9)/12 ) / 4 + 275*month/9 + day - 730530 + float(hour)/float(24)
dataset/ETHPy150Open lhartikk/AstroBuild/astro_build.py/calculate_day/operator `*` -> `/`