X times 9 equals 7 m 200mm what is x?

To find ( X ), first convert ( 7 , \text{m} , 200 , \text{mm} ) to a single unit. Since ( 1 , \text{m} = 1000 , \text{mm} ), ( 7 , \text{m} = 7000 , \text{mm} ), so ( 7 , \text{m} , 200 , \text{mm} = 7000 , \text{mm} + 200 , \text{mm} = 7200 , \text{mm} ). Now, set up the equation: ( X \times 9 = 7200 ). Solving for ( X ) gives ( X = \frac{7200}{9} = 800 ).