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

### Instruction:
Lara bought 52 stems of flowers at the flower shop. She gave 15 flowers to her mom and gave 6 more flowers than she gave to her mom to her grandma. She put the rest in a vase. How many stems of flowers did Lara put in the vase?

### Response:
 ลาร่าให้ย่าของเธอ 15 + 6 = <<15+6=21>>21 ช่อดอกไม้
แม่ของเธอและย่าของเธอรับรวมกันทั้งหมด 15 + 21 = <<15+21=36>>36 ช่อดอกไม้
ลาร่าเหลือ 52 - 36 = <<52-36=16>>16 ช่อดอกไม้ที่เธอวางในแจกัน