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

### Instruction:
Fred has 38 red marbles, half as many green ones, and the rest are dark blue. If he has 63 marbles, how many of them are dark blue?

### Response:
 เฟรดมีลูกแก้วสีเขียว 38/2 = <<38/2=19>>19 ลูก
เฟรดมีลูกแก้วสีแดงและสีเขียวทั้งหมด 38 + 19 = <<38+19=57>>57 ลูก
เฟรดมีลูกแก้วสีน้ำเงินเข้ม 63 - 57 = <<63-57=6>>6 ลูก