Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 5b8990e485b8d8022bad35e30617f513656a60cba06a5b80275241f7e29a42b1:14:32
   |
14 |                                 let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^