elimination of division by zero

Dear alla

My a=4 with datatype fixdt(0,16,0.001,0) and b=0 with datatype fixdt(0,16,0.001,0) and division block has the fixdt(0,16,0.01,0) here without losing the resolution.my result is always showing 368.5 why it was getting anything by zero i am getting 368.5.please expalaing me anyone why it was happned?

[Walter Roberson]

Please use better tags; see http://www.mathworks.co.uk/matlabcentral/answers/43073-a-guide-to-tags