Group with Quotient : TIFR GS 2018 Part A Problem 16

Understand the problem Let G be a finite group with a normal subgroup H such that G/H hasorder 7. Then (G cong) H × G/H. Source of the problem TIFR GS 2018 Part A Problem 23 Topic Group Theory Difficulty Level Medium Suggested Book Dummit and Foote Start with hints...