Trf 2.3.103 :lmtḥšbw hyk dy ˀp grmnqws qysr bˀgrtˀ dy ktb lsṭṭyls pšq : (the duty) is to be calculated according to what Emperor Germanicus also decreed in the letter he wrote to PN
See the entire entry for ḥšb vb. to think, calculate