There are two fathers and sons. The age of the father is 36 years old this year, which is exactly three times that of the son. The only son is 1.18 meters tall, 0.57 meters shorter than his father. (Please ask questions and solve them by parallel equations.)
有父子两人，今年父亲的年龄36岁，正好是儿子的3倍．独生子的身高是1.18米，比父亲矮0.57米．(请你提出问题，并列方程解答．)
<gadget id="calculator">1.18 + 0.57</gadget>
<output>1.75</output>

<result>1.75</result>