SASMO 2027 · Grades 4-5 · SET 001 · Self-study Question 16

The operation $*$ follows the repeated-digit pattern: $3*5=3+33+333+3333+33333$ and $8*3=8+88+888$. Find $9*4$.



Use the digit-repetition rule illustrated by the examples; $*$ is this special operation, not ordinary multiplication.