| 20 | x | 1 | = | 20 |
| 20 | x | 2 | = | 40 |
| 20 | x | 3 | = | 60 |
| 20 | x | 4 | = | 80 |
| 20 | x | 5 | = | 100 |
| 20 | x | 6 | = | 120 |
| 20 | x | 7 | = | 140 |
| 20 | x | 8 | = | 160 |
| 20 | x | 9 | = | 180 |
| 20 | x | 10 | = | 200 |
| 20 | x | 11 | = | 220 |
| 20 | x | 12 | = | 240 |
| 20 | x | 13 | = | 260 |
| 20 | x | 14 | = | 280 |
| 20 | x | 15 | = | 300 |
| 20 | x | 16 | = | 320 |
| 20 | x | 17 | = | 340 |
| 20 | x | 18 | = | 360 |
| 20 | x | 19 | = | 380 |
| 20 | x | 20 | = | 400 |
| 20 | x | 21 | = | 420 |
| 20 | x | 22 | = | 440 |
| 20 | x | 23 | = | 460 |
| 20 | x | 24 | = | 480 |
| 20 | x | 25 | = | 500 |
| 20 | x | 26 | = | 520 |
| 20 | x | 27 | = | 540 |
| 20 | x | 28 | = | 560 |
| 20 | x | 29 | = | 580 |
| 20 | x | 30 | = | 600 |
| 20 | x | 31 | = | 620 |
| 20 | x | 32 | = | 640 |
| 20 | x | 33 | = | 660 |
| 20 | x | 34 | = | 680 |
| 20 | x | 35 | = | 700 |
| 20 | x | 36 | = | 720 |
| 20 | x | 37 | = | 740 |
| 20 | x | 38 | = | 760 |
| 20 | x | 39 | = | 780 |
| 20 | x | 40 | = | 800 |
| 20 | x | 41 | = | 820 |
| 20 | x | 42 | = | 840 |
| 20 | x | 43 | = | 860 |
| 20 | x | 44 | = | 880 |
| 20 | x | 45 | = | 900 |
| 20 | x | 46 | = | 920 |
| 20 | x | 47 | = | 940 |
| 20 | x | 48 | = | 960 |
| 20 | x | 49 | = | 980 |
| 20 | x | 50 | = | 1000 |
| 20 | x | 51 | = | 1020 |
| 20 | x | 52 | = | 1040 |
| 20 | x | 53 | = | 1060 |
| 20 | x | 54 | = | 1080 |
| 20 | x | 55 | = | 1100 |
| 20 | x | 56 | = | 1120 |
| 20 | x | 57 | = | 1140 |
| 20 | x | 58 | = | 1160 |
| 20 | x | 59 | = | 1180 |
| 20 | x | 60 | = | 1200 |
| 20 | x | 61 | = | 1220 |
| 20 | x | 62 | = | 1240 |
| 20 | x | 63 | = | 1260 |
| 20 | x | 64 | = | 1280 |
| 20 | x | 65 | = | 1300 |
| 20 | x | 66 | = | 1320 |
| 20 | x | 67 | = | 1340 |
| 20 | x | 68 | = | 1360 |
| 20 | x | 69 | = | 1380 |
| 20 | x | 70 | = | 1400 |
| 20 | x | 71 | = | 1420 |
| 20 | x | 72 | = | 1440 |
| 20 | x | 73 | = | 1460 |
| 20 | x | 74 | = | 1480 |
| 20 | x | 75 | = | 1500 |
| 20 | x | 76 | = | 1520 |