16.12 × 99 × 16.12 simple calculation is killing me!

16.12 × 99 × 16.12 simple calculation is killing me!

16.12×99×16.12
=16.12*16.12*99
=(16+0.12)^2*99
=(256+0.0144+16*0.24)*99
=(256.0144+3.84)*99
=259.854*(100-1)
=25985.4-259.854
=25725.546

Simple operation - (736 △ 16 + 37) × 18
..

（ 736÷16+37 ）× 18 =736÷16× 18 +37× 18 =92×9+37×3×6 =810+ 18 +111×6 =828+666 =1494

1 / 4 + 1 / 8 + 1 / 16 + 1 / 32 + 1 / 64 + 1 / 128

Break down item
1 in 4 plus 1 in 8 plus 1 in 16 plus 1 in 32 plus 1 in 64 plus 1 in 128
=(1/2-1/4)+(1/4-1/8)+(1/8-1/16)+(1/16-1/32)+(1/32-1/64)+(1/64-1/128)
=1/2-1/128
=64/128-1/128
=63/128

12+14+18+116+132+164+1128．

12+14+18+116+132+164+1128，=1-12+12-14+14-18+18-116+116-132+132-164+164-1128，=1-1128，=127128．