to find / to seek, to look for / to desire, to wish / to demand, to sue, to compel

need, necessity

needed, necessary

mathematics (field of study)

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

Alternative form of 積もる

(arithmetic) product

volume

obtain the ratio

necessity (quality or state of being necessary, unavoidable, or absolutely requisite)