Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
A 1165 cm long rope is cut into 154 pieces. 150 of the pieces are equally sized and the remaining pieces are 100mm each. Find the length of each of the equal pieces in millimeters.

### Response:
Each cm contains 10mm so 1165cm is 1165*10 = <<1165*10=11650>>11650mm
154 pieces - 150 pieces = <<154-150=4>>4 pieces of the rope are 100mm each in length
The 4 pieces have a total length of 4*100 = <<4*100=400>>400mm
There is a length of 11650-400 = <<11650-400=11250>>11250 mm left
11250 mm into 150 equal pieces will give each piece as 11250/150 = 75mm long
#### 75