Problems with subtracting decimals

I don't know very well because it gives me the error, I tried using number_format and float but it gives the same error.

 <?php    $total=6300.00;  $var1=901.81;  $var2=5398.19;        //$subTotal == 6300.00 - 901.81 = 5398.19;  $subTotal=  $total - $var1;    //$finTotal == 5398.19 - 5398.19 = 0;  $finTotal=  $subTotal - $var2;      //$finTotal== ¿¿¿¿¿¿  -9.0949470177293E-13     ???????  echo $finTotal;  

https://stackoverflow.com/questions/65801705/problems-with-subtracting-decimals January 20, 2021 at 09:00AM