Answer:
the volume of the container is 
Step-by-step explanation:
we know that
To find the volume of the container calculate the volume of one wooden cube block and multiply by 756
The volume of one cube is equal to

the volume of the container is equal to

There is no photo of the equation I can’t help you if you don’t give me something to work with
Finished:Left
8:1
8/1 = 72/x
Cross Multiply
8x=72
divide each side by 8
x=9
She already finished 72 and has 9 remaining
Total = Finished + Remaining = 72 + 9 = 81