Yes and the reason it trips over digits is because those digits wind up being tokenized in ways that seem unexpected to us and would produce the same difficulty

Yes and the reason it trips over digits is because those digits wind up being tokenized in ways that seem unexpected to us and would produce the same difficulty if we were presented with them: 100,000 + 987 - 1444 * 25,945.842 / 0.0042 becomes "100" one hundred "," comma "000" triple zero " +" space plus " 9" space nine "87" eighty seven " -" space minus " 14" space 14 "44" forty four " *" space times " 25" space twenty five "," comma "9" nine "45" forty five "." period "8" eight "42" forty two " /" space divide " 0" zero "." period "00" double zero "42" forty two Now imagine someone reading that to you over the phone once and asking you to do the math in your head and you aren't allowed to use paper and pencil and you have to get it right the first time.