還滿想買付費版的。剛剛用下列來試,好用!142,857 × 1 = 142,857142,857 × 2 = 285,714142,857 × 3 = 428,571142,857 × 4 = 571,428142,857 × 5 = 714,285142,857 × 6 = 857,142142,857 × 7 = 999,999