x=? x*2*5-10-90-250-50*200:4-500:9-1055+0,5*2-0,1111111-0,00000001+2+2*8=19,999999906

x=? x*2*5-10-90-250-50*200:4-500:9-1055+0,5*2-0,1111111-0,00000001+2+2*8=19,999999906