(1+(2-(3*4))-2))-5

((12.45*0.521-22/55)/)2

-0.4*5-3

44*3.5--2/21(1)

10/2.5+0.3.

6*12-8

1.2-2.55-3.6*4/5+5.02*2

(2.2*(12.1+5/(23-4.5)*6.15))-5.2/3

1+2*3-4/5+6-7-8+9/10*11+12

2.4183/15.3304+9.1135*(0-7.423)

1000/(900/(800/(700/(600/(500)))))

(1.1+2.22+3.333+4.4444+5.5555+6.666+7.77+8.8+9)/(2*3*4)

(((((((((((2.0-3.00)))))))))))-2*(4+5)

45*2/3+1/3*15-27.7/19+12/19*5/6-28.1/4+3/4/2/3+29.8/7*21/16+1*230.101/1/5-1/5*21-(31.50+160/40*58+370)/(64-45)+32.120-144/18+35*33.347+45*2-4160/52-34-(58+37)/(64-9*5)/35.95/(64-45)*36.178-145/5*6+42-420+580-64*21/28*37.812-700/(9+31*11)/(136+64)*(65-345/23)-38.85+14*(14+208/26)

((((22.41*3)/5)+6)*7.4-5)



The standard output is

Invalid Expression

Invalid Expression

Invalid Expression

Invalid Expression

Invalid Expression

64.000000

5.810000

28.543423

19.100000

-67.491765

1.523810

2.037038

-19.000000

-310.091811

138.900400