`19 . 25 + 19 . 45 + 36 . 19`
`=19(25+45+36)`
`=19*106`
`=2014`
`73 . 61 + 73 . 38 + 73`
`=73(61+38+1)`
`=73*100`
`=7300`
`54 . 12 + 54 . 13 + 36 . 61 - 36 . 11`
`=54(12+13)+36(61-11)`
`=54*25+36*50`
`=1350+1800`
=3150`
`9 . 11 . 53 + 33 . 46 . 3 +99`
`= 5247 + 4554 + 99`
`= 9900`
`78 . 31 + 78 . 17 + 22 . 72`
`=78(31+17)+1584`
`=78*48+1584`
`=5328`
`69 . 115 - 69 . 14 - 69`
`=69(115-14-1)`
`=69*100`
`=6900`
`341 . 67 + 341 . 16 + 659 . 83`
`= 341 (67+16) + 659 . 83`
`= 83.1000`
`= 83000`