[NTG-context] Problem with: 0.222 222 222_3

Dear List, Me again, I have a question to this formula. I want to use 0.222 222 222_3, but I get 0.222222222_3. And another question too: how can I say, that I want not so much place between formula lines? \setuppapersize[A4] \setupbodyfont[thermes, 8pt] \starttext \startformula x_1 = 0.222 222 222_3 \stopformula \stoptext I want to have \startformula x_1= 0.222 222 222 x_1=0.222 222 222 \stopformula , but not \startformula a=b a=b \stopformula Many thanks for your help and tips. Uschi