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

### Instruction:
Rory collects rainwater. He has 100 L of rainwater in his tank. During a heavy rainstorm, water flows into the tank at a rate of 2 L/min for 90 minutes. How much water is in the tank at the end of the heavy rain?

### Response:
 2 ลิตรต่อนาที * 90 นาที = <<2*90=180>>180 ลิตรของน้ำไหลเข้าถัง
100 ลิตร + 180 ลิตร = <<100+180=280>>280 ลิตร