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Yes. It isn't さんぶん but さんぶ
分 【ぶ】 (n)
(1) one-tenth; one percent (one-tenth of a wari); 3 mm (one-tenth of a sun); 2.4 mm (one-tenth of a mon, a traditional unit used to measure shoe sizes); 0.375 grams (one-tenth of a monme); 0.1 degree (one-tenth of a do, used to measure body temperature on any temperature scale);
(2) one-quarter of a ryou (obsolete unit of currency);
(3) thickness;
(4) advantageous circumstances
