 
 <translate> The total runtime for the first three machines is 3 machines * 23 hours / day / machine = 69 hours / day. So these machines could produce 69 hours / day * 2 kg / hour = 138 kg / day. The fourth machine could produce 12 hours / day * 2 kg / hour = 24 kg / day of material. In total all the machines would produce 138 kg / day + 24 kg / day = 162 kg / day of material. The factory would therefore earn 162 kg / day * $50 / kg = $8100 / day.
Therefore, the answer is 8100. <hau> Jimlar lokacin aiki na na'urori uku na farko shine 3 na'urori * 23 hours / day / machine = 69 hours / day. Don haka wadannan na'urori zasu iya samar da sa'o'i 69 / rana * 2 kg / hour = 138 kg / rana. Na huɗu na iya samar da 12 hours / rana * 2 kg / hour = 24 kg / rana na kayan. A cikin duka na'urorin za su samar da 138 kg / day + 24 kg / day = 162 kg / day na kayan. Saboda haka masana'antar za ta sami 162 kg / rana * $ 50 / kg = $ 8100 / rana. Saboda haka, amsar ita ce 8100. 