Is there anyone could solve my math problem

[infosounds]

My code is

$answer = (1/212500);
output is

4.90205690308E-6

while I need I output as
0.00000470588

Please help, and tell me what is the specific problem,

[Richard_Grant]

you need to be using a float datatype.

 

4.90205690308E-6 is exponential.

[mac_gyver]

scientific notation is just another way of representing a floating point value.

 

to get the output formatted the way you want - 

$answer = sprintf('%.11F',1/212500);

@Richard_Grant, the large image in your signature is in violation of the forum's rules. i suggest you remove it or make it much smaller before you receive warning for it.