‘Explaining in an easy manner, I made him understand the sum’. Which one is the finite verb in this sentence?

A finite verb is a verb that has a subject and shows tense.
Finite verbs are not gerunds, infinitives or participles, which are classified as non-finite verb.
In the given sentence, ‘made’ has a subject ‘I’ (make verb টি subject এর number ও personএর অনুসারী ) and shows past indefinite tense. So, it’s the finite verb.
আলোচ্য বাক্যে ‘understand’ Bare infinitive হিসেবে ব্যবহৃত হয়েছে ।

Source: Cambridge Dictionary