after 6 hours ---- 2 × 2 × 2 × 2 × 2 × 2 = 2⁶
after 24 hours ---- 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 = 2²⁴
Exponential notation is preferable because its easier to write, and easier to work with