Hi could anyone help me out with a question in my geology book? It's been so long since I did any math that I cant figure out how to do this.

This is my problem:

When a neutron strikes a U235 atom, the following fission reaction occurs:

U235 = Ba141 + Kr92 + 3 neutrons + ENERGY

In the second cycle of this reaction, the 3 neutrons that were released will split 3 more U235 atoms, releasing 9 neutrons.

I would be so grateful for your help!