Vocabulary consisting only from characters you are able to read
子分
kobun
(1)henchman, follower, (2)(arch) adopted child mix
十億
juuoku
1,000,000,000, billion (American), (obs) milliard (British)mix
分の
bunno
denominator bun no numerator (in writing common fractions), X Yth's (Y bun no X)jlpt3, math