def METHOD_NAME(self):
    def ratio(a, b):
        return a / b if b > 0 else 0
    return [
        ratio(self.stat.match1, self.stat.count1),
        ratio(self.stat.match2, self.stat.count2),
        ratio(self.stat.match3, self.stat.count3),
        ratio(self.stat.match4, self.stat.count4),
    ]