Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a1d3ad97fceb0bef5205f44e1be5763320c17dad250d2596831a47c39dd54d0b:14:28
   |
14 |                             let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^