What is net income?

$1)$ paid for $12$ months of insurance $$12,000$

$2)$ paid this month's cleaning expense $$4,500$

$3)$ paid a dividend to stockholders $$2,500$

$4)$ purchased a building for cash $$27,500$

$5)$ issued stock $$15,000$

$6)$ borrowed cash from bank $$20,000$

$7)$ paid this month$$s rent $$3,000$

$8)$ received payment for completed job $$25,000$