Related על דמאי 7:7

If he had in his hand a basket of fruits that were not tithed, he takes two ninths of this one and one ninth of that one. Of the one ninth, whether untithed produce predominated over chullin produce, or vice-versa, he takes all the chullin according to the proper amount of terumat ma'aser that is in the untithed produce. Whether the ma'aser tevel predominated over the chullin, or vice-versa, he takes all the chullin according to the proper amount of terumat ma'aser that represents the tithes of the untithed produce. [If he had] 180 untithed produce, he takes 92 less one tenth. [If he had] 100 [of untithed produce and desires to] take tithes, he takes 93 less two tenths from this, and the remainder according to his calculation.