Below is an instruction that describes a task. Write a response that appropriately completes the request in Thai. Please answer in Thai.

### Instruction:
Peter knows that the distance an airplane travels between Spain and Russia is 7019 km, while the distance between Spain and Germany is 1615 km. Peter took a flight from Spain, which made a stopover in Germany, while being there, he receives a call from his brother asking him how many kilometers he has to fly to get to Russia and then return to Spain.  What will Peter answer?

### Response:
 ระยะทางจากเยอรมนีไปยังรัสเซียคือ 7019 - 1615 = <<7019-1615=5404>>5404 กิโลเมตร
โดยทราบระยะทางทั้งสอง พีเตอร์จะตอบว่าเขาต้องบิน 5404 + 7019 = <<5404+7019=12423>>12423 กิโลเมตร