Sṳ̀n-fap

3 × 4 = 12

Sṳ̀n-fap he yit chúng son-su̍t yun-son, fù-ho he „ד, kiet-kó ham cho „chit“.

$\underset{n}{\underbrace{a+a+a+\cdots +a}}=a\times n$