Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Rank | Peak Name | Elevation | Location | Notes |
| --- | --- | --- | --- | --- |
| 1 | Saka Haphong/Mowdok Taung | 3,465 ft | Thanchi,Bandarban | Unofficially the highest peak of Bangladesh.\n1st summit by English adventurer Ginge Fullen in 2006. |
| 2 | Zow Tlang/Mowdok Mual | 3,353 ft | Thanchi,Bandarban | Elevation measured during the summit expedition by Travelers of Bangladesh in 2012. |
| 3 | Dumlong | 3,314 ft | Belaichori,Rangamati | Highest peak in Rangamati.\nElevation measured during the summit expedition by Nature Adventure Club in 2011. |
| 4 | Jogi Haphong | 3,251 ft | Thanchi,Bandarban | Elevation measured during the summit expedition by Travelers of Bangladesh in 2012. |
| 5 | Keokradong | 3,235 ft | Ruma,Bandarban | Most popular trekking route in Bangladesh. |
| 6 | Rang Tlang | Unmeasured | Belaichori,Rangamati |  |
| 7 | Thingdawl Te Tlang | 3,149 ft | Ruma,Bandarban | Highest peak of Lowmbok row range.\nElevation measured during the summit expedition by BD Explorer in 2012. |
| 8 | Mukhra Thuthai haphong | 3,129 ft | Belaichori,Rangamati | Elevation measured during the summit expedition by BD Explorer in 2013. |
| 9 | Kapital/Capital | 3,090 ft | Ruma,Bandarban | This flat mountain top once used as a hide out place by separatist group from Mizoram. |
| 10 | Kreikung Taung/Ngaramh Tlang | 3,083 ft | Ruma,Bandarban | Elevation measured during the summit expedition by BD Explorer in 2012. |
| 11 | Taung Mey | 3,060 ft | Ruma,Bandarban | Near Keokradong peak. |
| 12 | Laisra Haphong | 3,041 ft | Belaichori,Rangamati | Elevation measured during the summit expedition by BD Explorer in 2013. |
| 13 | Rang Tlang 2 | Unmeasured | Belaichori,Rangamati |  |
| 14 | Nasai Hum | 3,005 ft | Thanchi,Bandarban | Most south-east corner peak of Bangladesh.\nElevation measured during the joint expedition of Sangu source by D-way expeditors & Nature Adventure Club in 2011. |
Question:
how many feet separate the 7th and 8th ranked highest peaks?
Answer:
20