三分 often appears in the sports phrase 三分球 (sānfēnqiú, three-pointer) or in expressions like 三分热度 (sānfēn rèdù, three-minute enthusiasm — giving up quickly).
grammar
When used figuratively, 三分 means 'a small degree' on a ten-point scale: 七分靠努力，三分靠运气 (70% effort, 30% luck).
