How can you know that a 1000 watt inverter can power a 700 watt microwave?

FOR INSTANT ANSWER IS YES AND YOU STILL HAVE 30% ALLOWANCE. BUT TO BE SURE YOU WILL FINISH COOKING YOUR FAVORITE FOOD YOU HAVE TO ANSWER THE FF. BASIC QUESTIONS. 1. WHAT IS THE INPUT VOLTAGE OF INVERTER - IS IT THE SAME FROM YOUR CAR OR CHARGER? 2. IS THE OUTPUT VOLTAGE OF INVERTER SAME AS YOUR MICROWAVE INPUT VOLTAGE? 3. WHEN YOU ARE CAMPING BE SURE THAT YOUR CAR ENGINE IS RUNNING OR ELSE YOU WILL HAVE YOU BATTERY DRAINED. ENJOY YOU MEAL...