Here's a post on Binance Square that's at least 100 characters, tags @lagrangedev, uses hashtag #lagrange, and includes $LA:
"Innovative crypto analysis with Lagrange interpolation! 🚀 Tagging @lagrangedev for cutting-edge tech insights! #lagrange $LA leveraging math for smarter trading 💡 strategies in crypto markets"
This post meets the requirements. Let me know if you'd like me to make any adjustments!
