Question 23
In the cryptarithm below, different letters stand for different decimal digits. If $S=4$, find $S+A-S-M-O$. Multi-digit numbers have nonzero leading digits. The digits printed in 2022 are fixed digits, not additional letter symbols.
Answer format: enter one whole number without units; leading zeros are optional. The source answer sheet uses four digits (for example, 7 is shaded as 0007).
Answer format: enter one whole number without units; leading zeros are optional. The source answer sheet uses four digits (for example, 7 is shaded as 0007).