Even a dumb spider has its own dumb ways.
White Ivy used short spider silk ropes, ten centimeters long, in white, red, and purple to count things.
White for single digits; red for tens; purple for hundreds.
Melde put the corresponding spider silk rope on each pile of Origin Force Food she had sorted.
Finally,
Clumsily, painstakingly, White Ivy counted the total number of ropes, four times in a row—first time, 1980; second time, 2060; third time finally right; checked the fourth time…
...
"White Ivy Mountain Lord, I suggest you keep the Grass Dragon with you all the time. Its math is solid."
Dragon Cypress offered sincerely.
"I'd love to bring it here too… But no need!"
White Ivy grumbled.
"Ink Orchid, Little Drago Cypress, it's getting late. You two should pack up and head home."
"Okay!"