A policy has an ordinary deductible d and a policy upper limit of u. You are reviewing paid claims data. There are m1 claim payments that exceed the deductible and m2 claim payments that are censored at the policy's payment limit. You are trying to fit an exponential distribution to the distribution of these paid claims, often referred to as the ground up distribution, using the maximum likelihood estimate. What is the formula for the estimated parameter in terms of m1, m2, u, and d