VTMO 2026 - Grade 4 - Final - SET 6 - Self-study Question 12

At 14:00, teacher Tom writes 12 on the board. Every 5 minutes Jerry erases the number and replaces it by the product of its two digits plus 12. For example, at 14:05 he writes $1\times2+12=14$. What number is on the board at 15:30?