Fuel calcualtion and formula size

I have used the following expression and it worked

io270 < 28 ? 0:
(io270 >=  1 && io270 < 28 )? (0.888888888888889 * io270)+-0.888888888888886:
(io270 >=  28 && io270 < 68 )? (0.25 * io270)+17:
(io270 >=  68 && io270 < 114 )? (0.217391304347826 * io270)+19.2173913043478:
(io270 >=  114 && io270 < 158 )? (0.227272727272727 * io270)+18.0909090909091:
(io270 >=  158 && io270 < 203 )? (0.222222222222222 * io270)+18.8888888888889:
(io270 >=  203 && io270 < 247 )? (0.227272727272727 * io270)+17.8636363636364:
(io270 >=  247 && io270 < 289 )? (0.238095238095238 * io270)+15.1904761904762:
(io270 >=  289 && io270 < 331 )? (0.238095238095238 * io270)+15.1904761904762:
(io270 >=  331 && io270 < 375 )? (0.227272727272727 * io270)+18.7727272727273:
(io270 >=  375 && io270 < 462 )? (0.229885057471264 * io270)+17.7931034482759:
(io270 >=  462 && io270 < 505 )? (0.232558139534884 * io270)+16.5581395348837:
(io270 >=  505 && io270 < 549 )? (0.227272727272727 * io270)+19.2272727272727:
(io270 >=  549 && io270 < 591 )? (0.238095238095238 * io270)+13.2857142857143:
(io270 >=  591 && io270 < 634 )? (0.232558139534884 * io270)+16.5581395348837:
(io270 >=  634 && io270 < 677 )? (0.232558139534884 * io270)+16.5581395348837:
(io270 >=  677 && io270 < 720 )? (0.232558139534884 * io270)+16.5581395348837:
(io270 >=  720 && io270 < 804 )? (0.238095238095238 * io270)+12.5714285714286:
(io270 >=  804 && io270 < 844 )? (0.25 * io270)+3:
(io270 >=  844 && io270 < 889 )? (0.222222222222222 * io270)+26.4444444444445:
(io270 >=  889 && io270 < 934 )? (0.222222222222222 * io270)+26.4444444444445:
(io270 >=  934 && io270 < 983 )? (0.204081632653061 * io270)+43.3877551020408:
(io270 >=  983 && io270 < 1023 )? (0.175 * io270)+71.975:8000

Thanks for instant response & support.