On July 1, 20X1, one of Rudd Co.'s delivery vans was destroyed in an accident. On that date, the van's carrying amount was $2,500. On July 15, 20X1, Rudd received and recorded a $700 invoice for a new engine installed in the van in May 20X1, and another $500 invoice for various repairs. In August, Rudd received $3,500 under its insurance policy on the van, which it plans to use to replace the van. What amount should Rudd report as gain (loss) on disposal