 <translate> Give the step-by-step reasoning process and then the final answer. Randy had 32 biscuits. His father gave him 13 biscuits as a gift. His mother gave him 15 biscuits. Randy’s brother ate 20 of these biscuits. How many biscuits are Randy left with? <yor> Ṣàlàyé bí wọ́n ṣe ń ronú lẹ́ẹ̀kan-lẹ́ẹ̀kan, kó o sì wá sọ ìdáhùn tó o máa fún wọn. Randy jẹ búrẹ́dì méjìlélọ́gbọ̀n. Bàbá rẹ̀ fún un ní búrẹ́dì mẹ́tàlá gẹ́gẹ́ bí ẹ̀bùn. Ìyá rẹ̀ fún un ní búrẹ́dì mẹ́ẹ̀ẹ́dógún. Arákùnrin Randy jẹ ogún nínú àwọn búrẹ́dì yìí. Mélòó ni búrẹ́dì tí Randy ní ló kù? 