21 乘法 30 等于多少？

21 × 29 = 609 21 × 31 = 651 21 × 28 = 588 21 × 32 = 672 21 × 33 = 693 21 × 27 = 567 21 × 34 = 714 21 × 26 = 546 20 × 30 = 600 22 × 30 = 660 19 × 30 = 570 23 × 30 = 690 24 × 30 = 720 18 × 30 = 540 25 × 30 = 750 17 × 30 = 510 7 × 90 = 630 9 × 70 = 630 10 × 63 = 630 14 × 45 = 630 15 × 42 = 630 18 × 35 = 630 6 × 2 = 12 83 × 63 = 5229 47 × 76 = 3572 6 × 93 = 558 72 × 95 = 6840 64 × 90 = 5760 71 × 69 = 4899 79 × 68 = 5372