SOLUTION REVEALED — Did you get it right? 
Let’s break it down step by step:
From the first equation:
9 o’clock + 9 o’clock + 3 o’clock = 21
That means each clock = 1
Second equation:
3 calculators = 30
So, one calculator = 10
And yes — it matches the sum inside it: 1 + 2 + 3 + 4 = 10
Third equation:
Bulb + Bulb – Bulb = 15
This simplifies to one bulb (with 5 rays) = 15
So, each single ray = 3
A bulb with 4 rays = 4 × 3 = 12
Final equation:
Clock + Calculator × Bulbs
Replace values:
9 + (1 + 2 + 2 + 4) × 3 × 12
Step by step:
9 + 9 × 36
= 9 + 324
= 333
