Using 2018 1040 please answer: Zachary L. (SSN 123-45-6789) and Cici K. Mao (SSN 987-65-4321) reside at 520 Chestnut Street, Philadelphia, Pennsylvania 19106. They are both under 65 years old and have one dependent (their son, Oliver, age 4, SSN 111-22-3333). They do not wish to take advantage of the presidential election campaign check-off. Other relevant information includes:

Zacharys salary as a manager: $40,000

Cicis salary as a teacher: $45,000

Interest (First Nationalbank): $200

Withholding: $5600

Complete their Form 1040 for 2018, assuming they are married and file jointly