 <translate> Give the step-by-step reasoning process and then the final answer. Dana has 15 more pencils than Jayden, who has twice as much as Marcus. How many more pencils does Dana have than Marcus, if Jayden has 20 pencils? <yor> Ṣàlàyé bí wọ́n ṣe ń ronú lẹ́ẹ̀kan-lẹ́ẹ̀kan, kó o sì wá sọ ìdáhùn tó o máa fún wọn. Àwọn ohun tí Dana ní pọ̀ ju ti Jayden lọ ní ìlọ́po mẹ́ẹ̀ẹ́dógún, èyí tó ju ti Marcus lọ ní ìlọ́po méjì. Mélòó làwọn ohun èlò ìkọ̀wé tí Dana ní ju ti Marcus lọ, bí Jayden bá ní ogún ohun èlò ìkọ̀wé? 