0.2209
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Divide the 19 into the 86, to get 4 with 10 remainder. 10/19 cannot be simplified any further, so the mixed number is 410/19
It is: 86+19+21 = 126
86 divide by 100= 0.86, fraction=86 over 100(reduce if possible)
19/86x100= 22.09302325581395...%
Add them together and divide by 2. (86+69)/2=155/2=77.5