Kyūjitai form of 倍数 (“multiple”).

understanding, comprehension / appreciation

understand, comprehend / appreciate

need, necessity

needed, necessary

twice, double, two times

times, -fold / (typography) a multiple of 全角 (zenkaku, “fullwidth/-height”) or 1 em in Western typography

double / increase

question, problem on homework etc. / a question; a matter (of time etc.) / a problem (something that needs to be dealt with); a trouble / an issue; a matter

count / number