Stardew Valley crop growth

Crop crop = new Crop(index, tileX, tileY);
      if (this.fertilizer == 465 || this.fertilizer == 466 || who.professions.Contains(5))
      {
        int num1 = 0;
        for (int index1 = 0; index1 < crop.phaseDays.Count - 1; ++index1)
          num1 += crop.phaseDays[index1];
        float num2 = this.fertilizer == 465 ? 0.1f : 0.25f;
        if (who.professions.Contains(5))
          num2 += 0.1f;
        int num3 = (int) Math.Ceiling((double) num1 * (double) num2);
        for (int index1 = 0; index1 < crop.phaseDays.Count; ++index1)
        {
          if (index1 > 0 || crop.phaseDays[index1] > 1)
          {
            List<int> list;
            int index2;
            (list = crop.phaseDays)[index2 = index1] = list[index2] - 1;
            --num3;
          }
          if (num3 <= 0)
            break;
        }