Hi there!
So, first you have to do all the multiplication and division, then the addition.
Steps:
1. (3/4 + 3/28 + 3/70 + 3/9700) + (1/420 + 1/462 + 1/6320)
2. (0.9003092784...) + (0.004703682394...)
3. Answer = 0.9050129608
Of course for the actual answer your teacher may wanted it rounded.
