Not claim math but close enough for Government math.

CRC dollar insurance per acre divided by CRC harvest price = claim trigger yield
When unit yield is below claim trigger, a claim is possible and you should call your agent to report a claim.

Example: $570/A CRC divided by $4.13 (CRC harvest price) is 130 BPA.
Compare this result with your yield.
If your yield is below, call your agent and report claim.

Only three days remaining for CRC discovery and RA beans.  RA corn happens in November

RMA's price discovery site:

http://www3.rma.usda.gov/apps/pricediscoveryweb/ActiveDiscoveryPeriods.aspx

Three keys to hassle free claims: 

Records of acreage,

Records of units,

Records of production