How do space probes make it past the asteroid belt without crashing into asteroids?

Question: How do space probes make it past the asteroid belt without crashing into asteroids?
- Keywords:
  asteroid,
  asteroid belt,
  space probe
Asked by lone shadow to Norah, Kevin, Jenny, James, Dominic on 13 Mar 2017.
- Dominic Doyle answered on 13 Mar 2017:
  
  Actually the density of object is quite low, so with proper imaging navigation equipment, we can avoid crashing!

Question: How do space probes make it past the asteroid belt without crashing into asteroids?