Curious about changes in esp while looking at assembly language with gdb

This is a simple code from Hackers School FTZ level 15.

I tried gdb. The left square is the brake gun points to check esp.

Minus 0x38 460

4 minus 45c

the point of trouble… I can't see the code touching esp, but where is c???

I added 10, so of course it's 460.

The beginning of the question started with 45c plus 10 and 460. I can't see you touching esp between those lines, but where did the c in the 45c disappear??