Hasil 1 2/3 jam - 45menit + 120 detik adalah

12/3 = 1/3 x 60 = 20
120detik : 60detik = 2menit
12.20 + 00.45 + 00.02
= 12.67
= 67 - 60 = 7
= 60detik = 1menit
= 12.00 + 01.00 = 13.00
= 13.07