Create better lessons quicker
10 + 10 + 3 = - 23, 10 + 10 + 10 + 5 = - 35, 20 + 10 + 10 + 3 = - 43, 30 + 10 + 7 = - 47, 10 + 6 = - 16, 40 + 10 + 9 = - 59, 10 + 10 + 10 + 10 + 9 = - 49, 20 + 20 + 8 = - 48,

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