ruby-on-rails - Ruby Divide在Rails Axlsx导出中始终返回零

我一生都无法弄清楚为什么在此Aslsx导出中无法进行除法。我可以加，减，乘并做模除法，但是当我尝试做answer_number / question_number时，它总是以0表示。有什么想法我做错了吗？

可将answer_number乘以question_number的方法：

@survey.questions.each do |question|
        question_number = Choice.where(question_id: question.id).length
        question.answers.each do |answer|
            answer_number = Choice.where(answer_id: answer.id).length
            sheet.add_row [answer_number, question_number, answer_number * question_number]
        end
    end

不起作用-吐出0：

@survey.questions.each do |question|
        question_number = Choice.where(question_id: question.id).length
        question.answers.each do |answer|
            answer_number = Choice.where(answer_id: answer.id).length
            sheet.add_row [answer_number, question_number, answer_number / question_number]
        end
    end

我还认为，当数字小于0时，它可能正在进行某种四舍五入的操作，但这似乎也不起作用（最终目标是获取每个答案的百分比）：

@survey.questions.each do |question|
        question_number = Choice.where(question_id: question.id).length
        question.answers.each do |answer|
            answer_number = Choice.where(answer_id: answer.id).length
            sheet.add_row [answer_number, question_number, answer_number / question_number * 100]
        end
    end

最佳答案

由于两个数字都是整数，ruby进行整数除法，因此忽略了剩余的分数，我想您所有的除法都返回0到1之间的数字，因此答案始终为0，以避免两个数字之一都应为a浮动，就像@mtm建议的那样，在两个数字之一中添加一个to_f函数