AnalyzerSentence analysis4SpansSentence暗算で計算してください。1000 character limitAnalyzeSentence暗あん算ざんで計けい算さんしてください。Span Details暗あん算ざんmental arithmetic; mental calculationnoun, suru verbでlocation, means, or scope markergrammar計けい算さんcalculation; computation; counting; consideration; estimation; expectationnoun, suru verbしてください。polite requestgrammar