cuadraron
-they tallied
The word cuadraron is the preterite form of cuadrar in the third person plural.
See the full cuadrar conjugation

cuadrar

Los libros no cuadraron.
The books didn't add up.
Los dos jóvenes vigías que estaban de guardia esa noche se cuadraron para saludarla formalmente, pero ella no pareció notarlo.
The two young men, who were on guard that night, gave her a formal military salute, but she didn't even notice them.
Cuadraron una reunión y tú eres el punto más importante.
They have called for a meeting and you stand at top of the agenda.
Las tropas se cuadraron y escucharon el discurso del general.
The troops stood to attention and listened to the general's speech.
Los reclutas formaron y se cuadraron.
The recruits fell in and stood at attention.
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