(9 / 8 + 4 / 27) by 27
(8/9+4/27)*27
=27*8/9+27*4/27
=24+4
=28
(8 / 9 + 4 / 27) × 27 should be calculated simply
(8 / 9 + 4 / 27) × 27
=8/9×27﹢4/27×27
=24﹢4=28
Those that can be easily calculated should be 3000 / 125
3000÷125
=(3000×8)÷(125×8)
=24000÷1000
=24
Simple calculation: 3000-15-8
3000 divided by 3 divided by (5 times 8) = 1000 divided by 40 = 25