Answer:
1800
Explanation:
Since there is the tragon fly beat his wings 30 times a second ,there is 60 hundredths of a second in a second multiply 30 x 60 and you should get 1800.
- mulitiply 0x0 = 0
 2. mulitiply 6x0=0
 3. multiply 3x0=0
 4. mulitiply 6x3 = 18
 5. have 1800
or you can just multiply 6x3 = 18 and add the two zeros