(233:100)•129

Interpret as (233/100) × 129.

• (233/100) × 129 = (233 × 129) / 100
• 233 × 129 = 233 × (100 + 29) = 23300 + 6757 = 30057
• 30057 / 100 = 300.57

Answer: 300.57 (or 30057/100).