Sixtyseven seconds is all he needs to click-clack through twenty calculations of three-digit figures. The answers to division problems are generally smaller, which helps explain his blazing average speed of 1.75 seconds per problem for twenty divisions of five-digit by three-digit numbers. His fingers fly over the beads with a speed and accuracy nearly seemingly beyond human capacity.
他在用算盤計算時，廿筆三位乘三位的題目，連寫答案只花了六十七秒，除法由於答案數字較少，五位除三位的廿題，每題平均只要一．七五秒，真是彈指神功，又快又準。