`A = 1+2+3+4+5+6+7+8+9+10`
`A = (10 +1) . [(10 - 1) : 1 + 1] : 2`
`A = 11 . [9: 1 + 1] : 2`
`A = 11 . 10 : 2`
`A = 110: 2`
`A = 55`
`B = 1+2+3+.....+100`
`B = (100 +1) . [(100 - 1) : 1 + 1] : 2`
`B = 101 . [99 : 1 + 1] : 2`
`B = 101 . 100 : 2`
`B = 10100: 2`
`B = 5050`
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