Pls help or I fail my grade

Organisms that live in the alpine and taiga biomes have developed unique adaptations that aid in their survival. the douglas-fir is a conifer tree that grows in the taiga biome. it has an average height of about 70 feet, and its wood is an important source of lumber.

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

If you could answer these your a life saver