Respuesta :

13.48 is actually 13.480:

let's start from the right side:


          
13.480
 -8.263=???7
and the rest:

13.47
 -8.26=??17
and the rest:

13.4
 -8.2=?.217
and the rest:

13.
 -8.=5.217


So the answer is :5.217