Refer to the following number (Left) @ ∞ 2 + 7 # 9 & 5 > 1 3 5 µ 9 & 4 ? 3 5 < 6 8 ! + 2 3 @ $ 4 (Right)

Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only.
निम्नलिखित संख्या और प्रतीक श्रृंखला का संदर्भ लें और दिए गए प्रश्न का उत्तर दें।गिनती केवल बाएँ से दाएँ की जानी है।

(Left) @ ∞ 2 + 7 # 9 & 5 > 1 3 5 µ 9 & 4 ? 3 5 < 6 8 ! + 2 3 @ $ 4 (Right)

How many such symbols are there which are immediately preceded by an even digit and also immediately followed by a prime number?
ऐसे कितने प्रतीक हैं जिनके ठीक पहले एक सम अंक है और ठीक बाद एक अभाज्य संख्या है?