if you have 41 shares and a 10/1 split occurs you loose 1 share or .84 cents if fractions are counted down.
if you have 42 shares you loose .84x2 $1.68
if you have 43 shares you lose .84x3 $2.52
if you have 49 shares you lose .84 x9 $ 7.56
Does that make sense?